What type of oil comes in the 6.2L?

[crafferty]

Holy shit?

 

No, this is a good thing. I like larger engine oil capacity like that.

Oh I don't have a problem with it at all. It just made me chuckle because I just think of LS race engines with large oil pans with the same capacity.

 

 

I think I was about $60 with Mobil 1 from Walmart in the 5 qt jugs and a M1 filter...that's figuring the leftover 2 qts in the 5 qt jug are accounted for on the next change.

I don't mind paying that for an oil change. I'll only put on about 12-15,000 miles a year so that's max two oil changes. I will just be on the look out for sales on Mobil1 Full Synthetic jugs when the time comes.

[BobHancock]

As a data point for dealer service cost as my free services are gone, I recently had an oil/filter change, tire rotation. 2016 6.2L, 16,086 miles. $53.00 complete which I consider quite reasonable.

[Dnt]

I just had what is apparently a rare occurrence on a 17 6.2 engine. the internal diaphragm inside the HPFP was leaking gas into the crankcase and mixing with engine oil. I noticed the oil level going up and was getting a strong gasoline smell when I rubbed the oil between my fingers on the oil dipstick. You guys need to be very diligent about checking the oil level at each fuel up. It is a rare occurrence but if you run it very long like that it will destroy your engine. Catch it early and you might be OK I am currently campaigning GM for a free extended powertrain warranty on mine due to not knowing the extent of the damage but knowing that there probably is some.   

[2015SeirraDenali6.2]

On 4/9/2015 at 2:33 PM, DeepSea said:

I'm purchasing a 2015 Sierra 1500 Denali with the 6.2L. Does anybody know if GM uses synthetic or regular oil from the factory?

0w-20 is naturally synthetic oil. It’s advanced full synthetic. That’s what gm uses in every single vehicle that comes off the assembly line. Full synthetic. They didn’t use conventional in my 2011 GMC Terrain. Full synthetic out the door.