The Great Oil Debate...

If your truck came with any free oil and filter changes be sure to use those first; after that use whatever you think is best. There is a thread on here about GM approved with a list of those oils vs others that are not approved (haven't paid the GM licensing fee). Good luck with the opinions though. :)
 

Thanks for info, I think GM prefers to use ACDelco but I've heard Mobil 1 is approved. Still trying to see if AMSOIL is.
 

There are 3 on GM's approved list of Dexos D oils, Like Andy said, for the ones that will pay the fee to get the stamp of approval.
I have been running the Mobil 1 Dexos D. Everyone will give you their spill on Amsoil/Royal Purple and the list goes on. Those discussions can get nasty sometimes.
 

When I owned 2500HD’s with Diesels, I took it to dealer for oil change. They have record, their oil, THEIR PROBLEM if engine goes bad/breaks. Bonus, Oil change, rotate tires, wash, vacaum- 95 bucks! Yep I am lazy in my old age
For the record I used Rotella when I was younger with no problems
 

Been using amsoil in my lm2 since the beginning. Now at 22500 miles. Never had any issue w the truck so far. Runs great and doesn’t burn oil.

Edit. Just hit 25k. 0 issues. Also use amsoil all in one fuel additive every 3k miles or so.
 

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An 11 year bumper to bumper warranty for a serious off road truck better hang on to that paperwork; it might come in handy when you are stuck somewhere in back country.:rolleyes:
 

I don't trust anyone doing service on my vehicle other than me. I've seen/heard too many stories about some jackass (dealership or otherwise) messing around with someone's vehicle and causing an issue.

I'm also old, ornery and I hate everyone. :LOL:
 

I don't trust anyone doing service on my vehicle other than me. I've seen/heard too many stories about some jackass (dealership or otherwise) messing around with someone's vehicle and causing an issue.

I'm also old, ornery and I hate everyone. :LOL:
I agree 100%. I don't want anyone driving mt truck. Ditto on the "I'm old, ornery and I hate everyone."🤬
 

There are 3 on GM's approved list of Dexos D oils, Like Andy said, for the ones that will pay the fee to get the stamp of approval.
I have been running the Mobil 1 Dexos D. Everyone will give you their spill on Amsoil/Royal Purple and the list goes on. Those discussions can get nasty sometimes.
Advanced Auto Parts handles the Mobil 1 Dex D oil, otherwise Amsoil is good
 

I agree 100%. I don't want anyone driving mt truck. Ditto on the "I'm old, ornery and I hate everyone
I don't trust anyone doing service on my vehicle other than me. I've seen/heard too many stories about some jackass (dealership or otherwise) messing around with someone's vehicle and causing an issue.

I'm also old, ornery and I hate everyone. :LOL:

Same here.

Also w amsoil. If you join their membership club, it really isn’t that much more that Mobil or ac delco. I order enough for 2 or 3 changes at a time.
 

Same here.

Also w amsoil. If you join their membership club, it really isn’t that much more that Mobil or ac delco. I order enough for 2 or 3 changes at a time.
Which specific AC Delco oil do you use?
 

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