I just received my oil analysis back on a 15 k run useing Delvac 1. No voodoo magnets or triple bypass surgery. I use Mobil 1 filters and change the filter/top off every 5k. 325 hours.

Iron 22
Chromium 0
Lead 1
Copper 16
Tin 3
Aluminum 3
nickel 0
Silver 0
Silicon 14
Boron 48
Sodium 4
potassium 6
Magnesium 503
Calcium 2253
Phosphorus 1579
Zinc 1669
Molybdenum 0
Fuel A
Water <0.1
Glycol N
Visc (100c) 13.6
Soot <0.1
Oxidation 14
Nitration 8.00

TBN 10.7 :ro)

For us non chemists is that a good, bad, or ugly analysis? I run Delvac & have been changing the oil every 5,000. I know that's overkill but I lean toward better safe ..... You've got me thinking about changing the filter @ 5000 & extending the oil change to 10,000.

15k & a TBN of 10.7, excellent! Nice to see you're getting your money's worth out of M1. I have Mobil 1 Truck & SUV in my truck right now & was planning on analyzing at 8k, but maybe I'll wait until 10k now.

Rmax, Those numbers are no different than the oil analysis I had done with 5k on Delvac 1 and the numbers with 10k on the oil were very similar. In fact some criticals such as copper and silicon have gone down. TBN was 10.1 with 5k on the oil. Go at LEAST 10k on your Delvac, change the oil filter every 5k ( I prefer the Mobil 1 filter ) as long as you have at least 25k on the engine with the crank case flushed out of heavy metals after break in. This oil analysis definately made my day ! ;)

Noooo way! I love my truck, oil is cheap even Delvac 1. As Nancy Kerrigan said WHY WHY WHY????? 5K to 7.5 K no more than that for me.......to each his own.

Like my Doc says, so far so good, but you keep living on the edge and one day these test results are not going to be so good LOL ha ha ha

Good Luck in the long run

Nice!

I run the same in my Max,good stuff

Nice!

I run the same in my Max,good stuffJust curious,what is your change interval, are you using a by-pass filter, and what oil filter are you using? Many thanks.

I don't use any Bi-pass systems or magnets. Just Delvac 1 and Mobil 1 oil filters. I just don't see the need for more but every one has their own ideas. Who ever said Delvac 1 is cheap at $23 a gallon has a different idea of cheap than I do. I am obsesive about my truck but it doesn't make any sense to drain good oil out and throw it away. The test results are only nominaly different than my tests with 5k and 10k on the oil. The only ones who will benefit from a shorter drain interval with Delvac 1 are those selling the product. With this set up Delvac 1 is more cost effective than dino. 7500 miles is the GM recommended change interval for dino. If you can't get more than that out of synthetic you are wasting money and getting zero benefit except perhaps better lubericity at start up. Thats a bigge here when its zero outside so to each his own. I should note that I did progessive drain intervals starting at 2k then 3k then 5k twice then 10k to the final interval of 15k. I will not be extending beyond 15k but I have every confidence that with a bi-pass system you could get at least 20k on Delvac 1. I would not run 15k with out a oil analysis on your vehicle. YMMV
My final analysis is that Delvac 1 ROCKS !

Maybe the "cheap" delvac they are referring to it the Dino based Delvac 1300? That's what I run in my truck and change it every 5-7K miles depending on what the truck is being asked to do (heavy towing, mostly highway, or a lot of city driving).

Delvac 1 synthetic is not cheap in my book

BlueMaxxxx, I am looking at my analysis and your numbers are very similar to mine after I ran 15K. I to changed my filter out and topped off every 5K however, I couldn't find any mobil filters at the time, so I used the wix filters. I do have a question about your report. You said that on your fuel there is an "A". The company that tested my oil uses an "A" for Abnormal. Is that the same for you? If so, wouldn't that mean you have more fuel then what should be there? Possibly injector problem?
Jeff

When I return home after the holidays I will have 15k miles on my Delvac1 oil. I do have an Oilguard bypass. I sampled at 5k, 10k, and when I return I will sample at 15k. The Oilguard is new on my truck and I wanted to sample every 5k for the first oil change to see the trend. For the first 10k I added NO make-up oil. Since the 10k sample I have added 3 qts. total. This is a combo of oil consumed, oil sent for analysis, and oil kept as a back-up for possible future analysis. If the oil is still good at 15k, I will probably change the Oilguard bypass filter just because I am curious to see it.

The ONLY issue so far was a high soot reading at 10k. However it may have been an anomoly since all other indicators (TBN and viscosity) were 100% normal, indicating NO issue with soot. It will be interesting to see the trend.

I got the Oilguard because it was cheap compared to changing the Delvac1 every 5k. Essentially the oil is good LONG after 5k miles. The real issue is the accumulation of dirt/debris/byproducts below the capability of the full-flow oil filter. Most are only 15-25 micron nominal. The Oilguard CLAIMS to be 3 micron absolute, 1 micron nominal. If true, the oil could go 20-40k miles before changing. Unfortunately, a standard oil analysis may show the oil to be in perfect condition when it is laden with particles that are tough on the engine. I am sure that 99% of all oil drained at 5-10k is still good from the perspective of a standard oil analysis. To know FOR SURE I should be doing a ferrographic oil analysis to see if the Oilguard is performing as advertised, but at $90 a sample?????? Ouch!!!! SPICER

I'm not sure about the "A" and I'm going to call them Monday and Find out. It's been A rated on all of my oil analysis since new. There is nothing about it in the tech notes indicating the fuel is abnormal. I have always ASSumed A is for average or normal amounts but it certainly would be a MUCH better test if they used a different rateing system for fuel content. I have never had any oil gain in my crank case. I use Predictive Maintenance Services or AV lubericants. Maybe some one else who uses them or George will tell us exactly what the A means. They have attention codes they attach to each section and there are no codes on the fuel under Physical analysis.
In regards to Delvac being cheap, it certainly is not cheap in my book. I do think its a good value. If I used the same filters, Rotella Synthetic and no oil analysis on a 7,500 mile drain interval I would spend $85 every 15k. Delvac 1, Mobil filters, freight and Oil analysis run $108 every 15k. I drive that every 3-6 months and I don't pull heavy loads. I would not be comfortable going over 7,500 miles with out a oil analysis on each drain with out Delvac 1. Then I would cap at 10k with out a analysis at each drain. I'm not trying to convince anyone they should change I'm just shareing whats worked VERY well for me.
Spicer, well said and exactly why I would never go beyond 15k even with a positive analysis. I would think that to some level if you had excess dirt the silicon level would rise. Even so I'll be very interested to see your results. I only avoided the bi-pass systems because of the off road driveing I do. I may break down and buy a oil filter magnet just for sh**s and giggles.

How much does the Delvac 1 run a quart and where do you get it?

I beleive the "A" used by George and co (AV Lube) means absent in their analysis.

Hound, thanx for the info. Kurt I get the Delvac 1 from George at AV Lube and he is here on this site. I think with freight its about $23 a gallon. He puts case lots on special with a oil analysis kit for around $96 plus freight.For me my last case with oil analysis and freight was $108, minus the $16 from the total $108 for oil analysis leaves $23 per gallon TOTAL with freight.:ro) Plus he's a great guy and his office is fast and friendly. Maybe some one who knows more about computers than I do can put up a link for you.

Just curious,what is your change interval, are you using a by-pass filter, and what oil filter are you using? Many thanks.


I do not do extended drain intervals do to the soot build up in the oil because of performance enhancements.

No by-pass filtration.

I do not do extended drain intervals do to the soot build up in the oil because of performance enhancements.

No by-pass filtration.So, what filter are you using, and what is your drain interval? Thanks.

What's TBN?

There is no particulate rating on a typical oil report? What's the point?

What's TBN?

There is no particulate rating on a typical oil report? What's the point?

TBN (http://www.blackstone-labs.com/do_i_need_a_tbn_.html)

Every oil analysis I've ever seen has a particulate reading. Some companies go into more details than others, ie: soot, insolubles, etc.

Kurt W wrote: "How much does the Delvac 1 run a quart and where do you get it?"


You can get Mobil 1 Truck and SUV at Walmart (and some auto part stores). This product just became available in approximately the last 6 months. This oil is the same as Delvac 1. Is is just packaged in one quart containers for the consumer (instead of gallon containers for the commercial user). Cost is about $4.85 per quart. I used to mail order also, but the shipping charges add up.

I don't believe its the same product although it should be good enough for a 10k interval. The additive package is not the same. I would never go 15k on the SUV. The cost at my local wally world was over $21 a gallon. The Delvac 1 from George is $25 includeing freight and IMO is a better product for diesel specefic applications.

Last time I looked over on the "BobIsTheOilGuy" forum (six months ago), a virgin oil analysis was done of the two products (Delvac 1 and Mobil 1 Truck and SUV oils). They looked the same and that was the conclusion of those on the forum at the time.

Do you have more recent data to support your statement that they are not the same?

On Edit - I spent the time today to go to an Oil Forum (that some individuals here spend time on). Follow this link where the two oils are discussed. I believe the conclusion is the same as it was six months ago,,, the same oil (just packaged differently).

http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=11;t=000202

Your conclusions and mine are certainly different after reading that. The link you posted strongly supports that truck and SUV is NOT the same as Delvac 1. Look at the data from both tests. Come on you really don't think Mobil re-bottled the exact same product then reduced the price......Do you ? :rolleyes: Not likely.If they did that they would probably charge more for the cute little bottles. Think about it. Four 1 quart bottles definately cost more to manufacture, print etc than a single gallon bottle. Not busting on Truck and SUV at all. In fact I think its a great product but it certainly is not the same as Delvac 1. For the little price difference and better additive package, combined with my test results I'm sticking with Delvac 1. :D Look at the Mobil 1 tech pages and refer to the manufactures acceptance rateing for Delvac Vs. Suv. I doubt that all of those companys such as Cummings, Cat etc would buy Delvac if they were convinced it was the EXACT same product. Haveing said that I could be wrong. After all I bought a Diesel because I thought the fuel was cheaper and for several weeks now I've been paying more than premium. :eek:

I'm still baffled. (or missing something) What good is this report, with no particulate information?

BlueMaxx -

I am not here to get in an arguement with you. If you look at the virgin oil analysis data that the link points to:

http://www.pbase.com/stinkypeterson/new_reports

clearly within measurement error, the oils appear to be the same. The element makeup of the oil in the oil analysis reports track each other. Where are the differences? Not only that, the data sheets by Mobil indicate the performance is the same.

If you have other data that differentiates the oils, please post it. I am here to learn.

With regard to pricing, who has larger purchasing power,,,, AVLUBE or Walhmart ?? I would expect the product sold by Walhmart to be lower priced than what AVLUBE can offer, even with the extra packaging required, as you mention.

Mobil Delvac 1 is marketed to commercial accounts (those with CAT, Cummins and Detroit Diesel engines) and is sold only by Mobil Oil Distributors. Mobil 1 Truck and SUV is marketed through consumer retail channels (Duramax, Cummins and Powerstroke engines) and is sold over the counter. Thus the difference in who acknowledges the product. The fact is, both are SL rated oils and thus meet the specs of all diesel manufactures.

If you look at the Virgin oil anysis on the link you posted Delvac 1 has a Boron rateing over 150. There is NO report on that page for SUV but the other links you posted put the Boron rateing over 100 points LOWER on the SUV.
I don't see what any of your posts have to do with this strand or my oil analysis. I really think you have blinders on if you think your compareing the purchaseing power of a single shop to Wally World. You overlooked the power of Cummings, Catapiller and several other commercial rateings by corporations that use Delvac. I think there is a little more purchaseing power there than just one store. Does the SUV come with an oil analysis in the price like the Delvac from Av Lube ? The rateings on the MOBIL 1 web site are so vastly different I think it speaks volumes. The sheets are NOT the same if you look at the rateings. Every time there is a oil discussion here some one shows up to the party with the blah blah blah don't use that etc. I'm not trying to sell any thing here or convince any one of any thing. I'm just shareing FACTS from my truck that have worked for me. Lets see some results from yours with 15k on the oil. ):h
As another poster already mentioned the particulate rateings are broken down into soot, copper, lead, Silicon etc.

As another poster already mentioned the particulate rateings are broken down into soot, copper, lead, Silicon etc.
I see a lot of ppm ratings, these are all dissolved solids, correct me if I am wrong, no micron distibution of anythis shown, maybe that is normal, I don't know.

What I am saying is that I don't see anything that says that there aren't large abrasive particles in the oil. Sorry if I am just not seeing it.

This is normal for any spectro anlysis which runs around $18 with TBN. A ferro anlysis is what you are referring to and does particulate anlysis under 5 microns. That test runs around $90. I plan to do a ferro at my next drain interval which will be the 50k mark on my truck and again at 95k. Every drain in between will get a spectro. After that I will only test every 50k.

I received a Message back from George this am and the "A" on the analysis under Fuel stands for Absent. :ro) :ro) :ro)

Here is comparison data for Mobil 1 Trk/SUV and Mobil Delvac 1 for other forum members to review. I'll let each individual make his or her mind up whether the oils are the same. In either case, both are excellent oils, probably the best on the market. It just depends whether you want to mail order your oil or pick it up at a retail outlet. You cannot go wrong in either case.


The following was obtained from BobIsTheOilGuy forum:

<TABLE style="WIDTH: 185pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=245 border=0 x:str><COLGROUP><COL style="WIDTH: 56pt; mso-width-source: userset; mso-width-alt: 2706" width=74><COL style="WIDTH: 67pt; mso-width-source: userset; mso-width-alt: 3254" width=89><COL style="WIDTH: 62pt; mso-width-source: userset; mso-width-alt: 2998" width=82><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD class=xl25 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 185pt; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent; mso-ignore: colspan" width=245 colSpan=3 height=17>Virgin Oil Analysis Element Numbers</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl25 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17></TD><TD class=xl24 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent"></TD><TD class=xl24 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent"></TD></TR><TR style="HEIGHT: 25.5pt" height=34><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; HEIGHT: 25.5pt; BACKGROUND-COLOR: transparent" height=34>Element</TD><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent">M1 TRK/SUV</TD><TD class=xl26 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 62pt; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" width=82>Delvac 1 Sample 1</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl27 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17></TD><TD class=xl27 style="BORDER-RIGHT: #ece9d8; 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BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num>1368</TD><TD class=xl24 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num>1204</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl24 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17></TD><TD class=xl24 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent"></TD><TD class=xl24 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent"></TD></TR><TR style="HEIGHT: 38.25pt" height=51><TD class=xl26 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; WIDTH: 56pt; BORDER-BOTTOM: #ece9d8; HEIGHT: 38.25pt; BACKGROUND-COLOR: transparent" width=74 height=51>Date Sample Taken</TD><TD class=xl28 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num="38333">12/12/2004</TD><TD class=xl28 style="BORDER-RIGHT: #ece9d8; BORDER-TOP: #ece9d8; BORDER-LEFT: #ece9d8; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent" x:num="38335">12/14/2004</TD></TR></TBODY></TABLE>




The Following is from a Mobil Oil Website

<!--StartFragment -->Typical Properties
<TABLE cellSpacing=1 cellPadding=4 width=205 bgColor=#cccccc border=0 xmlns=""><TBODY><TR><TD vAlign=top align=left width=135 bgColor=#cfe8ff>http://www.mobil.com/Images/spacer.gif





Mobil 1 Truck & SUV




</TD><TD vAlign=top align=left width=70 bgColor=#e8f4ff>http://www.mobil.com/Images/spacer.gif










</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>SAE Grade</TD><TD vAlign=top align=left bgColor=#ffffff>5W-40</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Viscosity, ASTM D 445</TD><TD vAlign=top align=left bgColor=#ffffff></TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>cSt @ 40ºC</TD><TD vAlign=top align=left bgColor=#ffffff>102</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>cSt @ 100ºC</TD><TD vAlign=top align=left bgColor=#ffffff>14.8</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Viscosity Index, ASTM D 2270</TD><TD vAlign=top align=left bgColor=#ffffff>151</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Sulfated Ash, wt%, ASTM D 874</TD><TD vAlign=top align=left bgColor=#ffffff>1.35</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Total Base #, mg KOH/g, ASTM D 2896</TD><TD vAlign=top align=left bgColor=#ffffff>12</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Pour Point, ºC, ASTM D 97</TD><TD vAlign=top align=left bgColor=#ffffff>-45</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Flash Point, ºC, ASTM D 92</TD><TD vAlign=top align=left bgColor=#ffffff>226</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Density @ 15ºC kg/l, ASTM D 4052</TD><TD vAlign=top align=left bgColor=#ffffff>0.854</TD></TR></TBODY></TABLE>


<!--StartFragment -->Typical Properties
<TABLE cellSpacing=1 cellPadding=4 width=205 bgColor=#cccccc border=0 xmlns=""><TBODY><TR><TD vAlign=top align=left width=135 bgColor=#cfe8ff>http://www.mobil.com/Images/spacer.gif





Mobil Delvac 1 5W-40




</TD><TD vAlign=top align=left width=70 bgColor=#e8f4ff>http://www.mobil.com/Images/spacer.gif










</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>SAE Grade</TD><TD vAlign=top align=left bgColor=#ffffff>5W-40</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Viscosity, ASTM D 445</TD><TD vAlign=top align=left bgColor=#ffffff></TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>cSt @ 40ºC</TD><TD vAlign=top align=left bgColor=#ffffff>102 </TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>cSt @ 100ºC</TD><TD vAlign=top align=left bgColor=#ffffff>14.8</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Viscosity Index, ASTM D 2270</TD><TD vAlign=top align=left bgColor=#ffffff>151 </TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Sulfated Ash, wt%, ASTM D 874</TD><TD vAlign=top align=left bgColor=#ffffff>1.35</TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Total Base #, mg KOH/g, ASTM D 2896</TD><TD vAlign=top align=left bgColor=#ffffff>12 </TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Pour Point, ºC, ASTM D 97</TD><TD vAlign=top align=left bgColor=#ffffff>-45 </TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Flash Point, ºC, ASTM D 92 </TD><TD vAlign=top align=left bgColor=#ffffff>226 </TD></TR><TR><TD vAlign=top align=left bgColor=#f2f2f2>Density @ 15ºC kg/l, ASTM D 4052</TD><TD vAlign=top align=left bgColor=#ffffff>0.854</TD></TR></TBODY></TABLE>



Regards,
Alan






BlueMaxxxx - Up until last oil change I used Delvac 1 (purchased from AVLUBE). I change my oil out at factory recommended intervals. No need to due oil analysis on a regular basis.

-

Now put up the the rateings for both Delvac and SUV. Big difference. If you just look at the basic properties then we might well be led to think that even regular Mobil 1 is the very same product. I agree, all three are excellent oils. I just don't base by choices on internet gossip. Especially when initial Delvac rateings began with such a big spread on the Boron. 156 Vs 53. I think you really don't have anything to offer other than your opinion, or more accurately you best guesstimate as you've never tested your oil. That's fine for your truck and your money. If your just going to drain it at 7500 miles then your spending a lot more $$ over 15k than I am with Delvac 1 and a oil analysis so it really seems a moot point. Like I said I'm not trying to sell anything. I have a good idea what is going on with my oil after a analysis and you are content to feel good flying blind. To each his own. :rolleyes: :D

Lets see, Boron for Mobil 1 TRK/SUV is 72 and Delvac 1 is 58 (Oil analysis done by same company within 2 days). Essentially the same value.

What ratings are you talking about? Both oils are rated CI-4 / SL.

Please enlighten me!!! I have asked you to post DATA, the only thing I get is long drawn out paragraphs of wandering words.

You began by telling me how I'm wasting my money at $23 per gallon when you can get the same product for $20. I'm a little sloooooow but lets figure this out. I spend $23 per gallon that lasts 15k with a analysis of my own. You spend $40.00 per gallon for the same 15k and have no analysis other than those from some one you've never met off the internet ? :eek:
On edit. You keep mentioning Stinkys reports. Read the Delvac 1 report right under the one you keep quoting. Look how different the numbers are. Look again at the reort you keep mentioning and you will see there are two other sample dates on the sheet with incomplete data. Thats what I think the results prove on stinkys reports. They are inconclusive.

A ferro anlysis is what you are referring to and does particulate anlysis under 5 microns. That test runs around $90. I
Thanks for the clarification, now go to your corners and wait for the bell..

Delvac1 Industry builder Specs straight from the Mobil 1 web site.

API CI-4,PlusCI-4/CH-4
CG-4/CF-4/CF/SL/SJ

ACFA E5/E4/E3

CAT ECF-1

Cummings CES
20072/20071

Detroit Diesel Pwerguard

Global DHD-1

Jasco DH-1

Builder Approvals for Delvac 1

Cummings CES
20078/20077/20076/20075

Mack EO-N Premium Plus
03, EO-M Plus

Mercedes Benz 228.5

Volvo VDS-3, VDS-2

Truck and SUV Industry builder specs and builder approvals :

CI-4, CH-4, CG-4, CF-4, CK, SL, SJ

Yup thats thw whole list for SUV :p

Spicer, well said and exactly why I would never go beyond 15k even with a positive analysis. I would think that to some level if you had excess dirt the silicon level would rise. Even so I'll be very interested to see your results. I only avoided the bi-pass systems because of the off road driveing I do. I may break down and buy a oil filter magnet just for sh**s and giggles.
I honestly would not bother with a magnet. I have used rare earth magnets (the strongest magnets I have ever seen) on my drain plug and found NOT A SPECK of metal at oil change on the magnet. Magnets work on ferrous metals. I am assuming there are no ferrous metals in our engine. My wife's blazer came with a magnetic drain plug and I find a drop of ferrous sludge on it at every oil change.

If you use a magnet on a Dmax, I would suggest having it on the fuel filter. It WILL do some good there. SPICER

Spicer, where does metal come from in the fuel system?

Yeah I was being fecetious. I'm not a magnet fan. I don't see the need after my last analysis. I will be interested in seeing your results. I think your set up would be perfect for all the guys who tow 5th wheelers etc and those who operate a lot on dirt roads. I also switched back to a stock paper filter. Noticeable difference on my Silicon rateings from my '02 max I ran with the K&N.

Per the Mobil lube specs. book which we have on several locations (lists all Mobile lubricants)the Mobile Truck/Suv and Delvac 1 oils are the same product.

Ok so I'm convinced. Mobil has rebranded Delvac for a new market. I pulled my last invoice from AV lube that included a case of Delvac 1, freight and a oil analysis. $108.03 Minus $16.03 for the Specto-analysis leaves 92.00 per case or $23 per gallon. My local wally World is close to $22 plus sales tax. OC says his Wally World is $20 plus tax a gallon. The price difference is less than a buck a gallon to three bucks a gallon depending on your local Wally World. If they have more than two quarts on the shelf. I get great service and I have no plans to start shopping Wally World to save Less than a average of five bucks per oil change. ($12.50 per year) I still say if you are running a full synthetic with out a extended drain interval you are wasting big $$$. Whats the point ? Burn synthetic Rotsmella at $12.88 from wally World and save your self 50% per drain interval. Its a great product on a regular service schedule.

Spicer, where does metal come from in the fuel system?
Apparently ferrous metals get into our fuel from many sources. Processing, delivery, but mostly from the pipes through which the fuel is pumped in all stages from processing, shipping, storage and at the pump.

I did not go for the expensive magnets offered by vendors. I bought a few rare earth bar magnets at a science surplus store. They were a fraction of the cost and are the most powerful magnets I have ever seen. I use 6 or 8 on my primary fuel filter (the OE filter). I cut open the last filter and there was definitely a dusting of fine ferrous sludge around each magnet. I have NEVER seen a speck of it on an oil filter plug. SPICER

Now I'm curious. Why put magnets on a filter at all? It's not like the metal is going anywhere.

Didn't mean to imply Delvac 1 was cheap by itself and I meant it was more or less cheap insurance against premature failures due to cold starts and high temps/loads when towing. Actually I am lucky enough to work close to a refinery distributor that is not Mobil, but they do carry Delvac 1 in cases and I get it for $88 a case plus tax. That's $5.31 a quart. No freight as I run over on my lunch hour and pick up a case when I need it.

So for me it's a good deal and I am going to buy it anyway even if it was $100 a case. When I first changed from Delvac 1300 to Delvac 1, I would swear I could hear the difference. The engine was quieter when first started after sitting a few days.

For me I just use it and forget about the analysis, heat, cold or anything related. I let the Delvac 1 worry about that stuff. Buy the best and worry less is my motto.

So for me it's cheap (insurance) and I see no need to push the envelope to 15K to save a few bucks and risk internal damage/wear over the long haul.

If I was going to trade the truck every 3-5 years I would run Dino and forget it. I plan on keeping this puppy 10+ years or until I croak whichever comes first, so a little overkill on the PM side of things makes me feel better. I have 45K on my '01 and have already changed the rear lube twice using the grape juice and the Tranny has had 2 changes with Transynd already.

Waste of money? Probably, will my truck last longer than yours mile for mile, hopefully! Will I go broke before you, maybe, but I didn't buy a Juice or any gauges, or anything other than stock air filter. So I put that money back into the PM budget.

One thing about these trucks is they are as individual as the owners want to make them, some do it on the outside and I do it on the running gear internals. Only time will decide if it's money invested or wasted and it really only makes any sense at all if you are in it for the long haul of 10+ years.

Do whatever makes you happy and don't make excuses for it or feel the need to defend it. It's up to you, it's your truck.

fyi - I just bought a couple of quarts of mobil-1 truck and suv (same as delvac) at schucks for $3.99 per quart. (on sale - $1.00 off retail price of $4.99).

FWIW - I bought it for the dirt bike tranny (2 stroke wet clutch application); For the truck, I buy delo-400 from costco...

- jeff

I don't care what the oil analysis say's I wouldn't wait 15k to do the oil change. We do oil samples on all our trucks at every oil change. I have seen a truck have a good oil sample at one change and a bad one on the next.

dmax lover......... you might think twice before you put that in your bike. Your clutches might glaze just a bit...don'no? Slip sliding away........ I wonder what graphite means?

So, what filter are you using, and what is your drain interval? Thanks.



I use the Mobil One filter and drain at 5k and refill. Over kill? Perhaps, I also get to write off my oil and filters :D

I believe in accelerated maintenance with Power Enhancements,too

Thanks Mackin for the info. We bought our truck used, and I've only changed the oil a couple of times, so I'm going into this cold. Couldn't find out what the first owner used for oil, or what his change schedule was. The first change was Delvac 1 and an AC filter, but for the second I used a Mobil 1 filter. I hadn't planned on doing a routine oil analysis, but a 7500 mile interval seems reasonable as the truck is stock. What effect would towing have? Anybody have any suggestions? Thanks.

Any reason why you guys are running the 5w vs the 15w. I am currently running Amsoil 15w-50 and have zero complaints. I do regular oil changes at the moment but will be installing Amsoils bypass filter system shortly. I have a friend that has delivery trucks running Amsoil and the bypass filter setup. All the trucks are diesel and they are started and stopped all day. They do regular oil sample testing and regular filter mantiance. Many of the trucks have well over 100,000 hard miles. They just recently had a truck with 100,000 miles on the engine oil and the test was still usable accroding to the test. They changed the oil anyways. I am not sure of the which type of test was run on the oil. Anyways they have about 10 trucks on the road daily and they have never had an oil related break down. They have had drivers destroy transmission and suspensions and other drive line parts. But they are very good at doing preventive mantiance on the vehicle so they can keep them on the road and the repair cost down.

I know that Amsoil claims that with their bypass filter a 1-3 micron filtration. I myself thank that 100,000 miles on oil is pushing it a bit. But the only way you can justify Synthic oils is to push the changes out. Yeah I know LT the synthic is way better IMO.

So how long are some of you guys pushing oil changes? Are you only running the a single filter or are you running a bypass like system. I am thinking that with proper filter mantiance and oil samples and a bypass filter setup I would think that around 40,000 miles is doable and safe. But you really never know untill you do it. Just wanted to get all your thoughs.

Two things - iron seems high to me but I am not that up to speed on wear metal content for engines like this - I'm used to seeing 1 or 2 but mind you thats on a 100 gallon sump. What was the TAN?

If I change my synthetic oil every 500 miles, filter every 250, can I get 1 zillion miles out of it? These comments are not directed at anyone.

So much of this discussion is set in what my daddy and what my daddy's daddy did. And of course the oil companies scaring the life out of you if you don't....

Changing the way we think is a slow process, but IMO this is such a waste, dumping syn down the drain at 5K is so crazy in a diesel. Again, i just represent yet another opinion, but stop poluting. 5W is the only way to go in cold weather areas, huge difference in cold start lubrication, the motors worst killer. Syn in the only way to go if you like cooler motors, and don't like to change oil and turbochargers, no question it's worth it, but keep it for awhile, and don't judge an oil by it's color, it's not your wifes hair. Buy a case of good ($2.99) filters, change them at 5-10K intervals, and change the oil once a year (unless you are OTR) unless you suspect fuel dilution or travel dirt roads exclusively, or are at the track every weekend, or you see summer engine temps over 210 regularly.

There I said it, I don't sell oil, I'm a chemical engineer. I am all about preventive maintenance, but get some counseling for the neurosis. Buy your kids a train set instead.

CjevysRus, I agree. None of it is cheap but I think Delvac is a good buy. I really don't think I'm pushing any envelope at 15k for my driveing and the tests verify this, at least to my satisfaction. I do like your motto about running with the best and worry less. I should note that I would not run 15k unless I was doing a analysis on each drain. If I ran Dino like I did on my '02 and changed at 5k intervals I'd be under the hood every month. I just don't have time for that. I also never pull over 3k and 90% of my driveing is highway. This stuff is all very subjective to each persons belief and individual needs. I have more miles on my '04 than you have on your '01 and this is after all the miles I put on a '02 in between. Like you at 45k the rear end and axles have been changed twice although I run Mobil 1. I have Transynd and have changed several filters and run a nictane. So I waste my fair share of $$$ as well. In fact the '04 has NEVER run a single tank of fuel without DFA and cetane boost.:)
Ozzy if the engine is going to take a dump its going to do it no matter what drain interval your on. If you drain at 5k and never run a analysis, theoreticly, you will never have any idea of what is going on until its too late. The real concearn for me on the D'max is watching the fuel in the oil up to the end of the warranty. After that its pretty much run it till it dies. Catastrophic failure is a possability any time without warning no matter what brand oil you use or what drain interval...Well except amsoil. If you run that muck your garunteed to kill your truck ! ):h ):h -:t
Iron was slightly elevated from my other tests at 22 . It was at 15 with the first drain of 7,000 miles on the oil and 13 on the second drain with 10,000 miles on the oil.

dmax lover......... you might think twice before you put that in your bike. Your clutches might glaze just a bit...don'no? Slip sliding away........ I wonder what graphite means? Diesel oils do not typically contain friction modifiers that will cause clutch slippage. They have anti-foam agents and lots of zinc for metal to metal protection - great for use in a gearbox.

I know shell rotella synthetic is great in motorcycles. I figure the mobil-1 is too.

- jeff

I guess I should have said I use my truck hard in the summer towing a 28' car trailer at around 8000 loaded with my '39 Chevy streetrod and assorted odds and ends. In the winter I drive it on mostly weekends around town, so it's not my daily driver.

Because of the summer towing and high heat I just tend to be very conservative and over protective. I tend to change the oil and filters twice a year so it doesn't add up to multiple changes like most of you with higher annual mileage. I would guess on average I am making 2 changes to your one at 15K. Works for me and it works for you so there it is. Do want you need to do and do what makes you comfortable.

Happy new Year to Everyone

Here is the short story:
15k m iles on my Delvac1 oil.
Sampled at 5k, 10k, 15k.
No make-up oil for first 10k.
Added about 2 1/2 qts. between 10k and 15k.

Noteables: At 10k my sample from AVLube showed high soot (1.1). After calling Mark Meddock at Oilguard he said it must be a mistake.....Reason: TBN and viscosity were 100% normal. So I sent Mark a sample of the same oil and it showed no soot.

I kept the oil in until 15k and sampled again and sent sample to AVLube. At 15k, everything looks normal except the following.......1) My soot is now back to <0.1. I called Mark again and he said soot is sub-micron and even the Oilguard system cannot filter it unless it conglomerates into bigger particles. He said the <0.1 reading proves the previous sample was in error.
2) My TBN reads VERY LOW on the 15k sample. Normal is around 10 at 5-10k sample. At 15k it reads 5.15. TBN is an indication of the oil's ability to handle acidity. Acidity is caused by soot and water creating sulfuric acid. The TBN additives neutralize this acid. If the TBN is really low, it is time to change the oil...........However, other indicators of a low TBN are Viscosity, soot, oxidation and water. All are very normal in my sample. So is this another skewed reading?

I will contact the lab that AVLube uses, George Morrison, and I may send another sample of the same oil to Mark at Oilguard. Stand-by for more.

Ultimately I really like the Oilguard system and I am very pleased with the service from them. SPICER

Spicer, does your analysis prove that the by-pass is working (actually filtering to a better standard)?

Spicer, does your analysis prove that the by-pass is working (actually filtering to a better standard)?
No, not really. The only way to know for sure the bypass is making a real difference is 1) compare the sample to another Duramax under similar conditions with the same oil that was run for 15k. 2) Do a ferrographic oil analysis which will give an ISO cleanliness level of the oil based on particles below 5 microns. This costs about $90 and it is not worth it to me. If the oil shows good on analysis that is good enough for me at this point. SPICER

So we are just taking the word of bypass filter manufacturers. $300 for a bypass filtartion is good money spent. $90 for the actual proof is not.

I'll help sponsor a simple experiment if you are up to it, again. (unless it has been done already)

Simple, ferrographic after 5K (no bypass) then ferrographic after another 1K (with bypass).

I am sure something like this has already been done. There is all kinds of data but it is provided by the manufacturer, and you know how we feel about that!

If a system was installed and capped off, you could run 5k and then sample it, connect the bypass and run again. It would cost arount $200 to run 2 samples. Would be interesting.......You could also simply compare 2 samples from 2 trucks with similar miles on the same oil. One with and one without bypass. Although not scientific, if the bypass is working there should be a pretty significant ISO cleanliness difference. But I like your idea better.

Any volunteers? I would front some money to help. SPICER

My though is that the same vehicle should be used, same testing company, heck, even the same tech. Control as much as possible. I have 500 miles on new oil (with oilguard installed). So I would not be a good candidate. i would suggest someone with at least 5K on the truck for break-in, who has not installed a bypass yet.

The only hard thing is finding someone ready to install. The oilguard is a great unit but it is left up to the truck owner to figure out how and where to install. I love my setup. I had a custom bracket welded up that bolted to the frame, right behind the full flow filter. SPICER

I used the frame itself in the same location, tilted at a 45 degree angle. Looks factory

I think the bypass is a good idea for those that travel extensively. However in my case I average 17-18k a year. So in 10 years I'll be anywhere from 170,000 to 200,000 if I keep the truck that long. If I was running 30k a year plus like some of us do it'd be a different story.

Pretty good point. It is more-or-less a waste of money for people changing oil on a frequent cycle, but probably worth it's weight in gold if you are a set it and forget it kind and like to make your oil last. If I were into putting 100K a year on a truck, I would think it required equipment and a real time saver, making 25K oil changes a real option. 20 oil changes a year would get old real fast.

You are joking? I assume if you can type, then you can read? There is a search feature, type in "oil*" We'll see ya next year.

Masterp2 Is Right...theres Lots Of Info On That Topic + A Ton More On Others , U Just Have To Look For It. No Sense In Repeating A Thread

If we don't repeat topics once in awhile we won't have much to talk about. Later! Frank

I use mobil 1 truck and suv 9 qts with 1 qt of sf3. Use napa 7202 oil filter.Get 19 on highway, 15 around town. Change every 5000. Started using when truck had 4000 mi. Just my .02 and info.......Rick:)