Does anybody have much to say about the Valvoline Premium Blue Extreme 5-40W? I'm a big fan of the Delvac 1 5-40W I'm running now, but I'm still a little concerned about oil consumption.

I ask about this oil because my local parts store handles it, and I'm thinking about trying it to see if consumption goes down. Other full synthetic 5-40s are harder to come by.

I've got about 9,000 miles on the Delvac in the truck right now, and I'll be dumping it soon to send in for analysis.

I don,t know much about the valvoline, but the Amsoil heavy duty diesel in 5w30 is the best oil money can buy. They also have a 15w40 if you want it, but Amsoil tech people say the 5w30 is better for the Duramax. you can order it online. It will be on your door step in 5-7 days. In testing the HDD 5w30 shows almost 50% less wear than Delvac 1 .

I have tested the Valvoline Blue 5w40. After putting it in I couldn't wait to drain at my 5000 mi interval. I bought the Valvoline on my NAPA acct. for $17.85 a gallon. Great price, and great ratings. But I could actually tell the Motor ran louder. I have since gone back to mine, and personal friends best of Schaeffers. You can get the full synthetic for about $16.00 gal. and their 15w40 synthetic blend for about $14.00 gal. I personally like the 15w40. I've done many an oil analysis on the Schaeffers 15w40 and they consistantly show I could double the amount of miles before my oil changes. If interested see below or PM me.;)
www.schaefferoil.com/ (http://www.schaefferoil.com/) :ro)

I don,t know much about the valvoline, but the Amsoil heavy duty diesel in 5w30 is the best oil money can buy. They also have a 15w40 if you want it, but Amsoil tech people say the 5w30 is better for the Duramax. you can order it online. It will be on your door step in 5-7 days. In testing the HDD 5w30 shows almost 50% less wear than Delvac 1 .

Who tested that - I bet Amsoil posted that result. There are plenty of treads regarding oil on this forum that prove otherwise. Shell Rotella non synthetic from Wally World is just fine (or Delvac1...) for a fraction of the cost.

Amsoil is NOT any better or will last any longer - but seems their marketing is way better... :lol:

I have used Valvoline Premium Blue Extreme 5-40W for most of my 03's 55K miles, with 5K change internals, and have had good results. Recently switched to M1 Truck & SUV and have really not noticed anything different. When you first switch to synthetic you will probably notice slightly lower PSI, especially at idle with a warm engine.

I've had good luck with Amsoil in the past, and I do think they make good oil. However, their pyramid scheme doesn't do much for credibility.

I think I'm going to stay with a 5-40W because of the huge temp swings I can get up here. I've made 20° starts in June before. Using 15-40W year-round is just too risky, and I don't think I want to keep switching if I can avoid it.

I just switched to Premium Blue..Coyote...No difference in engine sound...No oil consumption..
I would think if you used it along with some of your "premium weasel piss", your motor would last forever ):h

I have always had a huge drop in oil pressure running Delvac1 compared to 15-40 oil. Will have about 15 psi hot with 5-40 vs. 30+ with dino oil. Hot oil pressure at rated. Syn. is about 10 psi lower than dino oil, also. Oil samples with the syn. came back with alot more metal content.

I have not tried the Valvoline, but Delvac did not show me anything promising.

Just to let you all know, the oil testing was done by a independent company. Not Amsoil . They compared all the major synthetics Delvac1, Delvac 1300, Shell, Mobil 1, Castrol,and Amsoil. Amsoil won hands down. I know it's not cheap, but $50k trucks aren't either.

I have tested the Valvoline Blue 5w40. After putting it in I couldn't wait to drain at my 5000 mi interval. I bought the Valvoline on my NAPA acct. for $17.85 a gallon. Great price, and great ratings. But I could actually tell the Motor ran louder. I have since gone back to mine, and personal friends best of Schaeffers. You can get the full synthetic for about $16.00 gal. and their 15w40 synthetic blend for about $14.00 gal. I personally like the 15w40. I've done many an oil analysis on the Schaeffers 15w40 and they consistantly show I could double the amount of miles before my oil changes. If interested see below or PM me.;)
www.schaefferoil.com/ (http://www.schaefferoil.com/) :ro)

Great minds think alike, I just changed mine over the weekend and finally was able to go to Schaeffer's 7000 (15w40 blend).

That friend of yours must be one sharp cookie ):h

Great minds think alike, I just changed mine over the weekend and finally was able to go to Schaeffer's 7000 (15w40 blend).

That friend of yours must be one sharp cookie ):h
:exactly: They don't call him dmaxalliTech for nothing ;)


P.S. They now have introduced a full synthetic...:rolleyes: THE 9000.

I've tried just about every major brand of oil out there except for Amsoil and Delo 400. I don't regularily do UOA's, but day to day, I haven't noticed a difference except for a small idle PSI drop with 5w40 vs 15w40, huge difference in cold starting though.

I may be trying the Amsoil in my Victory V-twin soon, but I doubt it's anything stellar or much better than anything else out there so long as you change it, you'll be fine with anything diesel rated.

250,000 mi and counting, the only way I've found to cut consuption and keep oil pressure up is to use Lucas oil stabilizer (most truck stops , some auto parts stores) about $20 a gallon! Mix it with what ever oil you want, I've found the synthetics are no better than regular in this dept! I mix 1 qt in winter and 2 qts in the summer at each change. (4000 mi). I tow a lot so you may need only 1 qt, trial and error. :driver:

My "baby" had her first oil change today! Went back to the dealer and took advantage of a first visit free offer. Changed over to Valvoline Premium Blue Extreme 5-40W. (Had to pay extra for ATF filter) Couple things that I noticed was 10# less oil pressure at idle. The second may be my imagination but I could swear she's quieter at idle than before. Probably will do the future changes myself so I doubt if I stay with the Valvoline Premium Blue Extreme 5-40W. Have to do more reading in the next 5,000 miles and put the best oil that I can buy to keep her purrring along!
I LOVE THIS TRUCK:D

Hey Midmax,

I tried to PM you, but did not go through. Do you have your PM feature turned on??

If the oil is thinner 5W compared to 15W then the oil pressure goes down, this is no magic and nothing wrong with that. The same is true if the oil is cold and thick in the winter - the oil pressure goes up until the oil gets warm.

Hey Midmax,

I tried to PM you, but did not go through. Do you have your PM feature turned on??

I tried to reply.... By the way http://www.dieselplace.com/forum/images/smilies/eek.gif ... what's up with the Birthdate of 1992????

Is that your dad's truck???http://www.dieselplace.com/forum/images/smilies/confused.gif

not sure about 1992, must have been the default date on the system. Although I would not mind shaving a few years off, as the big 40 is only a few months away...

Thanks for all the input guys--I'm changing my opinions about oil slowly. I think I got sucked in by marketing, as I used to think someone was careless and probably just cheap if they used anything but synthetic!

I guess UOA will be the acid test--how do you guys feel about switching between dino and synthetic?

I use Delvac 1 and there is some oil pressure lose in the motor when the oil gets hot and I run the remote bypass system which is more of a drop than anything. I was out of oil last week when I changed and had to use Delvac 1300 and the hot idle pressure is slightly lower than the synthetic.

If I used a 5W40 I sure would have an analysis done after 3,500 miles. Engine oil type and weight have been an on going issue for years with hundreds of opinions. I say this "don't believe me, the oil salesman or the oil refiners, evaluate your oil via engine oil analysis from an independant testing lab". I have oil analysis done on a number of 6.6's and find the best results using 15W40 below +32F and straight 30 above +32F. If ambiant temps are very low a lower multi viscosity oil may need to be used. Oil should be changed every 3,000 miles. Oil is cheap compared to a failed engine. I get the best analysis using Chevron Dello 400 but Shell Rotella T is also very good. Using high multi viscosity oils in high ambiant temps can cause ring sizure and may break down. The reason the factory tells you to use a multi viscosity year round is because the engine was EPA certified on 15W40 and they cannot tell you to use anything else. High multi vis oils contain a high amount of polymers that is how they change viscosity. One of the funtions of engine oil is to seal the piston to the cylinder wall, when the high multi vis oils contact the high ring temps on a diesel engine the polymers form and eventually cause a deposit causing the rings to stick. Once the rings stick blowby starts and it's down hill from there. I am privey to many fleet oil analysis results and the engines going over 300,000 are using straight 30 weight above +32F and 3,000 mile oil changes. You must be aware as many oil companies state their oils have been proven on a diesel engine but you must ask yourself which diesel engine? Some oils are tested on engines with a 60 quart capicity not a 6.6 with a 10 quart capicity. A good independant testing lab is Analysts Inc in Hoffman Estates, IL.

Oil, this one always get people up in a roar. Just so you know- shifting back and forth types of oil you will do your engine no favors. If you compare equivalent products (such as synthetic blends, petroleum, 100% synthetics you would see similarities. The Benefits you do get from AMSOIL is that they will back up their claim with extended drain intervals as well as provide testing results to show why- usually the wear scar is the indicator AMSOIL uses. A few of the other products do show excellent results but I too run AMSOIL. DO NOT BREAK IN A DIESEL ON A 100% SYNTHETIC OIL or you won't get it broken in correctly since there is not enough friction to get a good break-in, even AMSOIL recommends this in Diesels. I have not heard much on the valvoline but the Delvac ranks pretty high and thus it's popularity in Diesel owners

I never had a problem with good old oil. 1.25qt. driven since 1986Does anybody have much to say about the Valvoline Premium Blue Extreme 5-40W? I'm a big fan of the Delvac 1 5-40W I'm running now, but I'm still a little concerned about oil consumption.

I ask about this oil because my local parts store handles it, and I'm thinking about trying it to see if consumption goes down. Other full synthetic 5-40s are harder to come by.

I've got about 9,000 miles on the Delvac in the truck right now, and I'll be dumping it soon to send in for analysis.

I have to agree with monty on avoiding wide viscosity range oils. I worked for a tad less than 30 yrs for an oil co. (major) and had some good contacts in research. the 1st number you read on a multi-vis oil is the oil's base viscosity, the 2nd number you read is it's "modified" vis. The viscosity modifiers are polymers that do NOTHING to help lube your engine, they just help slow the oil down and help it stick (think water if it was much of a lubricant). I was always told to chose a multi-vis oil that had as tight a range as the application would allow to minimize the vis modifiers (you need a low vis for start-up and cold operation/ high vis for expected operating temps/engine design).

Now as to the straight weight question: I would be cautious unless you are running a rig with little downtime, ie: minimal starts.

My $.02 of oil advice for a light truck diesel (don't care which one) is Delo 400 15w 40. Synthetics are for race/extreme applications and otherwise a waste of your hard earned $s (sorry in advance to those of you on the multi-level marketing plans...). Oh, and if you do go syn, I'd stick with PAO based synthetics vs. ester based (sorry again MLM folks...)

250,000 mi and counting, the only way I've found to cut consuption and keep oil pressure up is to use Lucas oil stabilizer (most truck stops , some auto parts stores) about $20 a gallon! Mix it with what ever oil you want, I've found the synthetics are no better than regular in this dept! I mix 1 qt in winter and 2 qts in the summer at each change. (4000 mi). I tow a lot so you may need only 1 qt, trial and error. :driver:
______________-

Heard this alot. What does this stuff do that, say, Exxon/Mobil 1, Rotella syn, etc., etc. = "Bare Bones" cant do? Help me and be specific, please, not "just cause a trucker said so and it works for me". We're all looking for a better mouse trap when it comes to diesel longevity (misnomer).
Thanks.

I have to agree with monty on avoiding wide viscosity range oils. I worked for a tad less than 30 yrs for an oil co. (major) and had some good contacts in research. the 1st number you read on a multi-vis oil is the oil's base viscosity, the 2nd number you read is it's "modified" vis. The viscosity modifiers are polymers that do NOTHING to help lube your engine, they just help slow the oil down and help it stick (think water if it was much of a lubricant). I was always told to chose a multi-vis oil that had as tight a range as the application would allow to minimize the vis modifiers (you need a low vis for start-up and cold operation/ high vis for expected operating temps/engine design).

Now as to the straight weight question: I would be cautious unless you are running a rig with little downtime, ie: minimal starts.

My $.02 of oil advice for a light truck diesel (don't care which one) is Delo 400 15w 40. Synthetics are for race/extreme applications and otherwise a waste of your hard earned $s (sorry in advance to those of you on the multi-level marketing plans...). Oh, and if you do go syn, I'd stick with PAO based synthetics vs. ester based (sorry again MLM folks...)
_______________

Dan,
I basically agree and have worked for the same folks as you (maybe) but on the E&P end, Drlg and Prod. But, before I bought my D-max (my 1st diesel), I was given references, had the time and made the calls and the in-person visits. Some of these Hot-Shot folks are pulling triple axle trailers and with loads from 36K - 42k Lbs (not a misprint) with 2500 HD dallys. They absolutely swear by syns. They just dont have the convenience of pulling in to Jiffy Lube (as you mention) every 3k. I went on one ride from Lafayette, La. to Houston, Tx got the load (34 klbs) and back to Grand Isle, La. and once loaded, she never got "out of the gas" all the way to G.I. (8 mpg). Listened to Pink Floyd, drank a few beers (not the driver), heck of a trip. After that I bought my D-max. Saw lots of Fords and Dodges, too, doing the same thing. One Ford hauler (7.3) told me he'd burn't 2 rear ends out before going to Syns.

So, for what it's worth,,,, ain't the oilfield a B*tch!!! Later, Pard
Mudbug

Mudbug: (like the handle) Yup, we were on opposite ends of the pipeline! I spent most my time in downstream, mostly on the IT side of the barrel tho, did spend 4 years in Houston with our Traders and then our E&P folks, so know a little (very) 'bout your biz.

Back to topic: That's an incredible amount of wt. to pull with a light truck!! So I'm guessin' I'll not have a problem any time in the future :D with the loads I have planned... I certainly would say that qualifies for "extreme duty" and you're right: syn oil is the only way to go...

take 'er easy....

I have run Mobil 1 5w30 in my 99 6.0 since 1K it now has 165K with 100K pulling a 7k horse trailer all across New England, and it still does not use a drop of oil between changes, just tried the 5w40 for the summer got a 10psi boost in oil psi.