Thanks. I figured as much. Asked a guy with a aged Duramax what he used, Delo or? I guess its eaten regular motor oil all its life. At least when he did the oil changes which I assume to be 90% of the time.
Using oil in a diesel engine that doesn't say for a diesel.
- Thread starter Rat Rod Mac
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RustyA
Platinum Member
Guy with the Duramax is dumb and lucky if he's been using gas engine oil in a diesel engine. Proper oil costs the about the same money.
sandman2234
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Delo makes a diesel engine oil, and has for years. The guy with the Duramax may not be as dumb as some think he is.
David from jax
David from jax
daman1
Gold Member
Not a good idea the additive packages differ for diesel applications, different additives and certifications, stick with a hdeo a oil specified for diesel applications
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True fact. Gasoline Engines have catalytic converters and diesels (some of them) have DPF's. And some of the additives don't play well with them..
Just run the correct oil.
Story: Back in the early 90's the EPA decided, unilaterally, to remove the additive ZDDP (Zinc-based) from motor oils. Catalytic Converters and Zinc don't get along. At all. (EPA and API work hand-in-hand.) ZDDP was, and still is, necessary for cars running flat-tappet camshafts. Sort of. Not so much anymore but.... 'nother story.
Anyhoo, they didn't tell anybody except the refiners. Even the Racing Teams sponsored by people like Mobil, Shell, etc didn't get told. Remember all the cars that were blowing engines for that one year in NASCAR? '94, maybe?
NASCAR ran Flat-Tappet camshafts back then. Probably still do. Don't know. Lost interest in Dinosaur racing. But that's why.
I run a synthetic in everything. Because I know how the EPA thinks. MPG means everything to them. Your engine blows? Oh well, sucks to be you. When they came out with their new Diesel Oil rating (CK-4?), Ford flipped out. They said, correctly, that it was junk. That it was too thin and that they wouldn't warranty engines that used it. I guess they had a meeting of the minds or something but it's calmed down since then.
orezok
Elite Member
No problem. It will work until it doesn’t. BOOM!
RalphVa
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I use M1 0w30 European rated diesel and rated for DPFs. Same for Castrol 5w30 I used in the VW TDI for 7 years and used in tractor and generator driver until switching to M1.
Captain Dirty
Platinum Member
While the API (American Petroleum Institute) "Starburst" and "Shield" say "Certified for Gasoline Engines", to keep it confusing, the API "donut" uses "S" for spark and "C" for compression after the "API Service" in the top half of the outer ring.
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Overhead Cam Engines of today use chains to run the camshafts. And they require cam chain tensioners. Hydraulic. Run by your oil pump.
When your OHC engine fires, that thing needs oil -- NOW! Right now. I mean, right freaking now. In cold climates, higher viscosity oils can be slow to move and that's why there is a '0' weight oil.
Not really a problem for pushrod diesels, which is 95% of them. Except for some European cars. Many Euro Diesels are OHC. For OHC Engines, not using it can be deadly. Some auto companies will flat-out deny your warranty for not using it.
Using 0w-xx weight oil doesn't do any real harm to your pushrod diesel. Probably. I just run a good 5w-40 Syn and head on down the road.