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<TD id=HB_Focus_Element vAlign=top width="100%" background="" height=250 UNABLE="off">Who's using what? Any oils better than others for the D-max?</TD></TR>
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Mobil Delvac 1300 15W-40 until I hit 10,000, then I'll switch to Delvac 1 5W-40.

Shell Rotella 15W-40.Thats all I have ever used in my diesel vehicles.

Mobil Delvac Synthetic 5w 40 ....


The diesel engine perferred lube ....
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<A name=ProductDeionTitle></A>Product Description
Mobil Delvac 1 5W-40 is a supreme performance, fully synthetic commercial engine oil that provides unsurpassed lubrication including better fuel economy, long drain capability, and extended engine life for today's diesel engines operating in severe applications. The state-of-the-art technology behind this product delivers exceptional performance in modern high output, low emission engines including refrigerated units as well as older well-maintained engines. Mobil Delvac 1 5W-40 is recommended for use in a wide range of heavy-duty applications and operating environments found in the trucking, mining, construction, and agricultural industries. It is also suitable for gasoline service in mixed diesel/gasoline fleets.

The unsurpassed performance capabilities of Mobil Delvac 1 5W-40 are the result of extensive cooperative development work with major equipment builders combined with the latest engine lubrication engineering. As a result, this product meets or exceeds the most current API, ACEA, JASO, and global diesel engine oil industry specifications and those of virtually all major American, European, and Japanese engine manufacturers as well.

Mobil Delvac 1 5W-40 has all the advantages of an SAE 40 weight oil without the higher oil consumption inherent in multigrade oils that use very light base stocks to achieve low temperature performance. Because of the unique molecular structure of the advanced base stocks used, combined with a highly responsive additive system, Mobil Delvac 1 5W-40 is not as volatile in the high temperature ring-belt area of the pistons of turbocharged engines, provides stronger lubrication film strength at higher temperatures, and low temperature performance reducing oil consumption and wear while improving fuel economy.

<A name=FeaturesAdvantageBenefitsTitle></A>Features &amp; Benefits
Modern high output, low emission diesel engines generate higher levels of soot and run hotter than older naturally aspirated engines which significantly increases the demands on engine lubricants. Current tighter engine designs reduce oil consumption, resulting in less fresh oil makeup to replenish depleted additives. Top piston rings are located higher bringing the oil film closer to the combustion chamber where temperatures increase thermal stress on the lubricant. Higher fuel injector pressure and retarded timing improve control of exhaust emissions, but also increase engine temperatures and increase soot loads in engines operating with exhaust gas recirculation. Mobil Delvac 1 5W-40 can provide satisfactory lubrication at temperatures significantly higher than the upper limit for other extra high performance diesel engine oils. It is also fully compatible with conventional oils. The key benefits include:


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Advantages and Potential Benefits</TD></TR>
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<TD vAlign=top align=left bgColor=#ffffff>Optimum thermal and oxidation stability</TD>
<TD vAlign=top align=left bgColor=#ffffff>Reduced low temperature sludge build-up and high temperature varnish deposits</TD></TR>
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<TD vAlign=top align=left bgColor=#ffffff>Enhanced TBN Quality Reserve</TD>
<TD vAlign=top align=left bgColor=#ffffff>Deposit control and extended drain intervals</TD></TR>
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<TD vAlign=top align=left bgColor=#ffffff>Inherent stay-in-grade shear stability</TD>
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<TD id=HB_Focus_Element vAlign=top width="100%" background="" height=250 UNABLE="off">OK sounds good, now how much a quart for the Mobil Delvac 5w-40?</TD></TR>
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<TD id=HB_Focus_Element vAlign=top width="100%" background="" height=250 UNABLE="off">OK sounds good, now how much a quart for the Mobil Delvac 5w-40?</TD></TR>
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Quart ?? You need 2.5 gallons .... If you can't find locally Avlube sells it,click his banner ....


http://www.prod.exxonmobil.com/channelpartners/mn_distributor_directory.jsp





Mac http://www.dieselplace.com/forum/smileys/Approve.gif

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<TD id=HB_Focus_Element vAlign=top width="100%" background="" height=250 UNABLE="off">Thanks, just wondering the cost. </TD></TR>
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I use Shell Rotella 15W-40 with the GM AC Delco filter.


I get the oil in 2.5 gal jugs at Tractor Supply for $16.95 per jug.


The filters I get at Advance Auto for $7.95 ea.


Not bad an oil change for 25 dollars and change.

Does anyone have an opinion or comment on rotela 5w-40 syn ?? I am currently using AMSOIL 15w-40. will gm ok the use of 5w-40? comments??? AkDually61

GM recommends 5w-40 for colder temps, so there is no problem there. I use Delo 15w-40. Sorry I have no info to give on Rotella 5w-40...


Bob

I've used a variety of lubes in my DMax so far. Mostly Rotella-T 15W40. Have been using the Rotella 5W40 "semi-syn" for cold weather for the last couple of years, have it in the truck now. I've also run a couple of changes on Mobil Delvac 1300 15W40 and gotten some good analysis results on all the oils. I'm planning on running the Rotella 5W40 until warm weather and I have at least one more change of Rotella 15W40 and Mobil Delvac 1300 "stockpiled." Once I get through that, I'm planning on running Mobil Delvac 1 or Schaeffer's 7000 15W40 as a year-round lube.

I bought some Rotella T synthetic 5W40 and noticed it is rated CH-4 not CI-4 like the regular Rotella T 15W40. So I went to the Shell web site and emailed them about this. Here is their reply:


"Thanks for the opportunity to respond to your inquiry, and thanks for using Shell lubricants.

ROTELLA T Synthetic has recently been upgraded to API Service Category CI-4 quality, and will be in retail stores the end of January.

ROTELLA T SAE 15W-40 is our "flagship" heavy duty engine oil, and consequently is the first to upgrade to more advanced performance specifications. Using CH-4 quality ROTELLA T Synthetic in your Duramax will not cause problems.

The principal benefit of synthetics is their extreme temperature performance. At subfreezing temperatures, they have better flow and pumpability performance compared to mineral oils. This can benefit your engine with better lubrication at subfreezing temperatures, and quicker starts, which means less work for your starting system. At very high temperatures, they can have better oxidation resistance. In most diesel engines, oil temperatures don't get hot enough for this product feature to provide a significant benefit.

Because synthetic oils have better flow properties, they can also contribute to more efficient engine cooling.

Synthetic oils also offer the opportunity to improve fuel economy because they usually have a lower viscosity grade compared to mineral oils. And because they usually have lower volatility, synthetics can sometimes give better oil economy - you may not have to top-off as often.


Peter Van Benthuysen"


I think I'll use this synthetic for the winter and then switch to the regular Rotella T for warmer weather. I'm not going for extended drain intervals and I think the regular oil is satisfactory and then some.


Jim

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GM recommends 5w-40 for colder temps, so there is no problem there. I use Delo 15w-40. Sorry I have no info to give on Rotella 5w-40...


Bob Just took mine to the dealer for the first change and inspection. They put 15w 40 in...............HMMMM? It's cold here in Chicago........hmmmmm?</BLOCKQUOTE>

I pay $89 for 4 gallons of Delvac 1 5W40 Synthetic at my local oil distributor. I call day before and they have in waiting for me as I go by on my lunch hour.





Thats about $5.50 a QT.

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I pay $89 for 4 gallons of Delvac 1 5W40 Synthetic at my local oil distributor. I call day before and they have in waiting for me as I go by on my lunch hour.





Thats about $5.50 a QT. The dealer is charging 5.31 a quart for the GM stuff, at least the dealer I'm using</BLOCKQUOTE>

Just put Delvac 1 5w-40 in my truck last week, and it has Lower cold start pressure, and higher hot idle pressure. Thats good!!! Only problem I had was the dealer put in 12 quarts - whoops! The fumoto valve came in real handy to adjust the oil to the correct level. The engine seems to run a lot smoother when cold too.


Mackin thanks for that post good information.


Engineer BillEdited by: EngineerBill

Nobody uses Delo 400 15-40?


This is what I intend to use since I get it free....if there's no reason not to.

I have only used Delo 400 15-40 in marine diesels and seems that's what most of the marine engines use out here. But I've been using Rotella in my Duramax and am considering changing to Delo based on the chart from AMSOil (http://www.amsoil.com/products/hdd.html). According to AMSOil - Delvac 1300, Delo, and Rotella are pretty darm close regarding engine wear.


sfwarpath

I used the dealer oil(Rotella), than at 7500k went to Rotella Syn 5w40 until around 16,000. Then I switched to Schaeffer's 15w40 and just ordered another 6 gallons of it, plus 24 quarts of 5w30 for the wife's T-blazer.


Not a full syn, but a full 15w, but also at a really good price.

I just did an oil change today at 6200 milws...using pennzoil 15w-40 and a delco filter...its not a daily driver and if i have to use it in the cold, i can plug it in first...just as a visual comparison, the Pennzoil seems to have more body and just looks better than other oils ive used in the past. my two sense..bob

Delvac 1 5W-40, $74.99/case (4 - 1 gallon jugs) - probably have to goto a Mobil distributor to find.


Delvac 1300 15W-40 - $22.32/case (4 - 1 gallon jugs) - Sam's Club


Will probably use the synthetic in the winter, Delvac 1300 in the summer. For filters, I am pretty convinced from my own research that Baldwin makes the best filter for this application.


If you can't find a local Baldwin dealer, goto their web site.


Good luck!

Yeah I tried the delvac1 and heres what I got.

Idle oil pressure 1 click above low pressure redline (16lbs).

An engine that knocks and rattles much louder cold/hot.

I cant get that water weight 5 weight oil out of my expensive engine fast enough.

The delo never had these problems.

ProblemChild, you sure do have a lot of problems.....there's a ton of people on here using Delvac 1 and never heard anything even remotely close to what you experienced. Doesn't make any sense that the Delvac 1 would cause you to have that problem. No doubt you did, but can't understand that one.


Mine idles cold at 80- PSI with the Delvac 1 and as it warms up it drops back to 50 or less. Never saw a 16 in my life or heard of it with anyone else unless you count those first 5-10 seconds when you start it after an oil change. Did you put the plug back in or have the filter screwed on tight? Just kidding, but the 5W part only comes into play in very cold climates, in a cold truck. The oil flows in sync with the temp. environment it is exposed to.


Anyway, whatever works for you is fine, but that is a strange one and if I were you I would try to find out why it does that, could be something going on internal there.

Chevysrus

Well your not correct about that. The guy I bought the edge from has 16.9 hot idle with delvac1. I asked this question on another thread and 1/2 the people there saw 16-17 lbs hot idle pressure.

So Im not sure where you got your info from???

thanx for all the input guys. I am running amsoil syn 15w40 right now but its getting to be a $$$$ and hard to locate locally oil. I was planning on using the rotella 5w40 syn all the time. think there would be a problem with this idea. I really like using syn fluids. have since I got the truck. BTW my cold psi runs about 80 and then when it warms up i run around 50, these are at idle. if I was to use delvac do you all still suggest syn in winter and reg during the summer ? -6 at 0630 this morning, dang seems like were going to get winter anyway!!!!!http://www.dieselplace.com/forum/smileys/Disapprove.gif http://www.dieselplace.com/forum/smileys/Embarrased.gif AkDually61

I have only used Delo 400 15-40 in marine diesels and seems that's what most of the marine engines use out here. But I've been using Rotella in my Duramax and am considering changing to Delo based on the chart from AMSOil (http://www.amsoil.com/products/hdd.html). According to AMSOil - Delvac 1300, Delo, and Rotella are pretty darm close regarding engine wear.


sfwarpath








Thanks, I think I'll run the Delo http://www.dieselplace.com/forum/smileys/Big Smile.gif

Best deal going is 2 10 quart jugs of the Amsoil Heavy Duty Diesel and Marine for $71 plus about $11.50 shipping. That makes it about $4.15 a quart.


http://www.lubespecialist.com/Merchant4/merchant.mv?Screen=CTGY&amp;Store_Code=LSOS&amp;Category_C ode=DMO





Greg

AkDually61, IMO running Rotella synthetic year 'round should be completely acceptable and with the new version rated at CI-4, it meets the highest specifications required by Duramax (CH-4 or CI-4 per the owner's manual.)

Good luck,


Jim

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GM recommends 5w-40 for colder temps, so there is no problem there. I use Delo 15w-40. Sorry I have no info to give on Rotella 5w-40...


Bob Just took mine to the dealer for the first change and inspection. They put 15w 40 in...............HMMMM? It's cold here in Chicago........hmmmmm?</BLOCKQUOTE>





Well, I didn't say it was REQUIRED. Just stated GM RECOMMENDS 5w-40 for colder temperatures, meaning there are no warranty problems running that weight of oil, which someone asked about. On your dealer oil change, unless you specifically asked for synthetic oil, do you think the dealer is just going to put it in there?? Of course not. If you don't specify the oil, they are just gonna put dino in there...think about it...HMMMMMMM


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You gentlemen that run Delvac 1 5w40. How many miles between changes? Going change the oil in my 04 Duramax in the next few days when I get to 5000 miles. Never used Delvac, but I want to give it a try. Thanks for the info.


Joe

You gentlemen that run Delvac 1 5w40. How many miles between changes? Going change the oil in my 04 Duramax in the next few days when I get to 5000 miles. Never used Delvac, but I want to give it a try. Thanks for the info.


Joe





This is my first diesel pickup that I have owned. I have always been one to have the LOF done every 2-3000 miles. The sevice manager at the dealership here has told me to go by the oil life monitor. I did not feel comfortable using regular dino to go up to 10,000 miles on a change. So, I fugured that if I am going to go that far on an oil change, I'm GOING to use synthetic year round. The only diesel synthetic that the dealership here uses is Mobil Delvac 1. I can only say that at -15F (had the timer messed up, off by 12 hours) that DuraMax with Delvac 1 started much better than any gasser I had with 5-30 dino in it.

Wow, not one mention of Pennzoil Long Life 15/40......hmmmm....

I change my delo 400 15w40 every 5,000 miles. It looks nearly brand new coming out...

Any opinions on Amalie?http://www.dieselplace.com/forum/uploads/Amalie_oil_tag.jpg

I too run Chevron Delo 400 15W-40 and change it every 4,000 - 5,000 miles depending on if is highway or mostly city. I am very pleased so far. Engine Oil is clean going in and clean when it is drained. I buy it at Advanced Auto Parts here in Trenton, OH for 6.46 a gallon, not a bad price. Meets all the specific specifications for the Duramax and doesn't cost you an arm and a leg. Drive On, Real Trucks don't have Spark Plugs!

I switched to Delvac 1 at 7000 miles. I noticed lower oil pressure when cold, but when hot it is the same (about 18 psi).

I have always changed oil every 3,000 miles and not worried about what type of oil I use, as long as its a major brand and is 15W-40. You can't change it too often. Is it wise to switch between synthetic and regular oil, depending on the time of year, or does it not make a difference.

It does make a difference if nothing more than the synthetics are usually a 5W40 viscosity while the dino oil is usually available in 15W40. A lower viscosity will help with cold weather starting. Beyond that, synthetics have many qualities that can make it superior or desireable compared to dino, yet quality dino oils are all most people really need. Read the many posts about this using the search feature.


Bottom line: synthetics are superior but probably not necessary. Some people feel better using "the best" and therefore use synthetics. Quality dino oil is SO GOOD that it probably will never let you down as long as you properly maintain it.


You are probably changing your oil way more than necessary (that makes you feel good) so the added cost of synthetic would be exaggerated if you continued that practice.


Good luck,


Jim

2fast2 is right on the money. IMO, if you need to change oil at 3 or 5 or even 7000 miles to feel comfortable, use dino. If you use syn and change at 5K I think you could save money. I use Delvac 1 and run to 10K. I don't like to change oil any more often than I need to. I do change the filter at 5K. I've done this on gas rigs with Mobil 1 for over 15 years.


I also think it is important how often and how far you drive. I drive every day, except maybe Sunday, and almost never drive less than 30 mles for each start.

Since we are talking engine oils. I just drained out the factory oil which appeared to be Rotella-T 15W40 at 1,099 miles and installed Amsoil 15W40 heavy duty synthetic diesel oil. Since I did so I have noticed a different smell emitting from the engine area. It almost smells like differential oil, has any else experieced this? There are not any leaks detected or oil spilled during the oil change. Thanks...


Justin

Yeah, Rotsmella does that too, but the Delo 400 I'm using now didn't. Faint hot oil smell. It would go away after a few hundred miles.

I used Rotsmella on my last max, not this time thanx http://www.dieselplace.com/forum/smileys/Clap.gif I swtiched to Delvac 1 at 2 k, changed at 7k, changed again at 12k. From now on I am going to run the Delvac 1 8k and change the filter every 4k. I am certainly not going to pay any attention to the oil life moniter http://www.dieselplace.com/forum/smileys/Shocked.gif I never had any pressure problems like Problem child. That seems like a defective filter issue not a oil brand problem. As far as easy starts My truck has been out side this winter. I never plug it in. Even at minus five straight temp it starts right up. http://www.dieselplace.com/forum/smileys/Approve.gif

Actually I had read on the Shell site that Shell would reimburse customers who bought the smelly Rotella if they wanted it replaced. They supposedly have adjusted the formulation to address this complaint. I didn't really notice any odor when I recently changed to Rotella T synthetic.


The smell is more of an issue with our Duramax engines due to the open PCV design, so I am told.


Jim

Read more carefully, group...


6600LB7 said that the smells began when he drained what he thought was Rotella, and installed Amsoil.

Right. It isn't necessarily one brand or another (although I was pointing out Shell admitted they had some issues) but a function of the engine design.


I suggest driving faster, more wind, less smell.http://www.dieselplace.com/forum/smileys/Approve.gif


Jim

Not to belabor a point, but I did read it. I don't know what is in a DMax from the factory. He asked, "It almost smells like differential oil, has any else experieced this?" I said that Rotsmella does that too and, as 2fast2 noted, part of the reason is the vent design.