Brian806

Member
What kind of engine oil do you think is best for diesel engines? We been running Kendall In the tractors! But I been running Rotella T in my diesel pickup cause that is what the previous owner said he ran! Thiking of switching to all Rotella but don'tike the idea of switching oils! Do you guys really think it makes a difference staying with the same oils in a engine?
 
The only danger in changing oils could be an adverse reaction between additives. The oil itself would be basically the same. Different additives may possibly conflict, but in a full oil change that should be minimal if at all. I see no harm in changing. The thing that I would avoid would be mixing oils in the engine as in adding a quart of brand X oil to brand Y oil that is already in the engine.
 
Kinda like beer. Different brands may taste different.

But the end result is the same.

Gary
 
I had only one bad experience changing oil types. My AC Model M crawler has had straight oil since the late 30's as best as I can figure. One day I changed to Rotella 15-40 Shortly after I did that The pistons scuffed and siezed to the wall my motor started slowing down, and stopped. I honed the cylinders, and stuck to straight wt oil, and haven't had a problem since. I have no idea what else could have caused the problem, other than the oil. Stan
 
your hd oil started cleaning all the sludge loose. You probably had a half inch or more in the pan. Normally it cleans it slowly but sometimes chunks can turn loose. If you had run hd oil from the beginning, you would have NO sludge or gunk in your engine.
 
My Opinion is no. The other day there was a post with a link to some pretty
smart oil guys . If i remember correctly it was bobistheoilguyDOTcom. Pretty
interesting stuff actually. Would be worth checking out
 
I agree with Allen. Go for it. I run 15w40 Rotella diesel oil in everything with no problems even my gas burners. Only place you may have issues is on a new car that requires the 0 weight oils. The old iron won't care a bit.

Greg
 
I use cam 2 in both my gas and Diesel engines, I buy it in 55 gallon drums, 10-30 and 15-40 never had a problem with it. But as I said before i will use any brand oil, and have used many different brands, I NEVER had an engine problem or failure with any engine oil, all this bs about oil additives ect I don't believe it. I have a 89 Chevy 350 with 172,000 miles dosent burn a drop, all I run in it is 10w30, my power stroke 7.3 has 190,000 miles no problems, my 99 dodge dakota 184000 miles, still runs but off the road no engine problems, my ford 4610 diesel tractor has 4090 hours on it, no problems. None of these engines have ever been rebuilt. Why people worry about what brand oil they use or what brand gas they use just blows my mind. It's all in your head. Just keep the oil and filter changed and run it already. This question had been asked so many times on here that it's getting ridiculous.
 
Once upon a time there may have been some validity to such practice but no longer.

Change oil brands and types if you like.

Dean
 
I've even switched from synthetic to non synthetic and back never blew anything up maybe I got lucky .
 
Well over the years I've wondered the same because on a few engines I've switched around on they seemed to start using oil ?
Now on others like my sisters car I don't think it ever had the same brand twice and it never seemed to care. Never used any and lasted for many many years.
Now I kind of pick one brand and stay with it. In the diesels I picked Rotella T 15w40 for no other reason than it is found everywhere and at a good to better price.
 
Thank you Bill. I didnt know how to do that. Actually i was just hoping i remembered the name of the link correctly.
 
I've been running diesel oil in everything with flat tappets. It still has some, (although reduced) of the zinc additive needed for flat tappet cams. This is an important additive for the anti wear properties, but looks like the EPA is forcing it out. Good news is the lubrication engineers are working to improve what they have to work with, so all is not lost. Also, the old gas tractors have very mild cams and low valve spring pressures, so cam wear is not a real problem area.
 
Depends on the engine. Old tired and worn out you're probably best off sticking with what's in it, like that old crawler. I switched from Pennzoil to Wolf's Head in my Dakota in high school and blew it up. Washed down the cylinder walls and lost compression.
Was told after we swapped the motor we should have just dumped a quart in each hole and cranked it for a while to put a new film on the walls. By a guy who dealt with that about once a year when the gas company decided they could save a bunch of money using a different oil in their compressor engines.
 

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