Using Diesel Oil in a Gas engine?

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Is it alright to do this? I have a 1999 Dodge ram and GMC trucks from the 90`s. All are gas, I`m intending to use Rotella 0w40 syn in them all.
 
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diesel oils tend to have more additives and will only help keep the engine clean. nothing to worry about!!!
 
FWIW, I run Rotella T 5W-40 in both of my Subarus. I'm really not sure if it's better than any of the other quality Group III SM-rated oils, but I like it. I don't burn any oil in either, though so I'm not really worried about my CATS
 
The HDEO (Heavy Duty Engine Oils) also sometimes called Diesel oils, are almost all dual rated for both gasoline and diesel. Rotella synthetic HDEO is dual rated.
 
I have heard diesel oils can kill your cat if you put it in an oil burner but does anyone have any proof of that? The reason I ask is because most of them (Rotella for sure) are SM rated. I would think that SM rating would not allow them to have too much zinc. Is it the zinc that harms the cats or is it something else?
 
would their be a problem with an high milage engine 340,000km using oil with so much detergent? I`ve years ago it can cause an engine to burn oil.My engines right now don`t
 
As everyone else has mentioned running Shell Rotella T in your gasser will not hurt a thing, the new mandates on cats are just something to make the manufactures look greener, and looking, being greener is great, however in this instance we are talking about a very small increase in problems using these oils with zink, or whatever it is causing the problems in cats when a car consumes oil. I have run the Shell Rotella, and the Rotella T in all manner of engines without any problems... You may decrease your cat life after 200k or so I'm not up on the specifics, but we have come so far with oils, cats, emissions that manufactures are really having to reach to get any gain right now. Cats are a emission system that is mandated by good old government to last a absurb number of miles, or time (which it should be, this keeps pollution out of the air, they are expensive when purchased new because of the precious metals they contain) so the car manufactures reach for that little bit more to stretch them as far as they can, however we as Americans are the type that when you place a need for a product that free enterprise will take over, and I think eventually we will see a add package that will once again cover a broad range of engine types from the new roller type valve/cam systems, to the old flat tappet high spring pressure high horse power hotrods. This is just my rambling opinion, as of now the newer oils are still better setup for our newer engine types with roller type cam/valve systems, these type systems produce greater economy, much easier on oil (this is why the long drain intervals) and in my opinion a better overall engine that produces less pollution, most of the time now with engine internals greater economy equates to a longer lasting, and even more horsepower producing engine (excluding the smog pumped junk for the 70's era). Sorry for the long rambling post, but I really think the drive for greener engines, longer drain intervals, 5w-20 oils even are producing better designed engines, and Shell Rotella T type oils are still great oils that can serve these engines perfect !!
 
I ran 15W40 in the 4-cylinder C230 Benz without issues. If I could find an HDEO in 10W30 I'd give it a try in my Buick with the 3.8L.
 
As others have said most "Diesel oils" are actually dual rated for both diesel and gasoline engine use. As long as the weight is appropriate for your application they will work very well indeed.

"If I could find an HDEO in 10W30 I'd give it a try in my Buick with the 3.8L"

Chevron Delo is made in 10W-30 and I think some of the others are as well.
 
Originally Posted By: wgtoys
As others have said most "Diesel oils" are actually dual rated for both diesel and gasoline engine use. As long as the weight is appropriate for your application they will work very well indeed.

"If I could find an HDEO in 10W30 I'd give it a try in my Buick with the 3.8L"

Chevron Delo is made in 10W-30 and I think some of the others are as well.

Oh, I've read about the Delo 10W-30 (and Rotella, I think) here, but I've never been able to find it in stores. We don't have things like Farm and Fleet around here -- or if we do it's way out in the hinterlands.
 
I heard once that using DMO in a gasser can cause oil burning in an older/high milage engine. The theory being that the high detergent amount in DMO will cause things like rings to become unseated. Causing oil consumpition.
 
Originally Posted By: y2k345
I heard once that using DMO in a gasser can cause oil burning in an older/high milage engine. The theory being that the high detergent amount in DMO will cause things like rings to become unseated. Causing oil consumpition.
The oil you are considering is called a HDEO, Shell Rotella or Chevron Delo 400 for example are Called Heavy Duty Motor oils designed for severe commercial use in gas and high speed diesels, which are the types used in semi trucks ,tractors boats with those type engines etc. The theory is a bunch of crud.
 
Rotella and Delo and the like are not diesel engine oils. They are heavy duty engine oil that are dual rated for gasoline and diesel engines. That means they carry SM and CJ-4 ratings.

Why do people say HDEOs will harm cats if the engine burns oil? After all, they are SM rated. There should be no difference between Rotella and Pennzoil YB as far as the cat is concerned.
 
Originally Posted By: Benzadmiral
Originally Posted By: wgtoys
As others have said most "Diesel oils" are actually dual rated for both diesel and gasoline engine use. As long as the weight is appropriate for your application they will work very well indeed.

"If I could find an HDEO in 10W30 I'd give it a try in my Buick with the 3.8L"

Chevron Delo is made in 10W-30 and I think some of the others are as well.

Oh, I've read about the Delo 10W-30 (and Rotella, I think) here, but I've never been able to find it in stores. We don't have things like Farm and Fleet around here -- or if we do it's way out in the hinterlands.

I can't find it FL either.

I think the reason is because 10w30 is recommended for diesels operated in cold weather conditions that don't happen in our region of the USA.

What a shame, Rotella 10w30 produces some amazing numbers in the Gasoline Engine UOA forum.
 
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