Thinking of selling my new 6.2L Denali...

[Silverado4x4]

No way I would leave oil in there for 15,000 miles I don't care what kind of oil it is. Your mechanic is probably telling you that cause he wants your business on a motor overhaul.

 

[DontTaseMeBro]

No typo. It is Amsoil Signature Series synthetic designed for 25k highway miles. I change at 15k for combined driving per my mechanic's recommendations.

I would love to see what your Blackstone Oil sample results look like.

 

[PPV_2018]

LOL about the oil that is hilarious.. probably 0w20 at that. . . please fire your ‘mechanic’

As far as OP, it is really unfortunate that you’ve let the rah rah get to your head. The failure-per-vehicles-produced ratio is quite low.

But For one thing, there’s no way I would put an 80-90K truck for sale on FBMP or Craigslist in particular. Some might disagree fine, but truth is any vehicle transaction over 20K has no business being done private party imo for a plethora of reasons. Sell it outright to a dealer, carmax, carvana, or some legit company that actually has the funds to back the check they cut you.

I don’t have the luxury of saying nah, i don’t want it anymore after spending 100k on a truck, but if i was in your shoes, maybe I’d sell it and then go get a Tahoe with the diesel.

 

[JKeller]

It's 30w oil. I'm not recommending anyone do what I do; I simply stated what I do. Everyone here is empowered with the ability to do their own research and draw their own conclusions. There is lots out there on Amsoil Signature Series. Agree or disagree with information available, hopefully future responses at least have the benefit of the information before forming and posting opinions.

 

[Joseph Garcia]

It's 30w oil. I'm not recommending anyone do what I do; I simply stated what I do. Everyone here is empowered with the ability to do their own research and draw their own conclusions. There is lots out there on Amsoil Signature Series. Agree or disagree with information available, hopefully future responses at least have the benefit of the information before forming and posting opinions.

No offense was meant by anyone. I asked the question because it is highly unusual for someone to change oil at 15k miles on these trucks. That does not mean that it is wrong or anything else negative with the practice, it simply means that this specific oil change mileage interval is different than the norm. Regarding opinions, we all have opinions and we are all free to express them in a respectful manner.