Oil consumption on the new 6.6L V8 ? Owner feedback please.

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April 8th, 2024, 4:39 PM

#31

mountainmanjoe

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Quote:

Originally Posted by canknucklehead

I have had my 2022 GMC truck since new,

which truck? which engine?

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April 8th, 2024, 10:45 PM

#32

pachuconj

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Quote:

Originally Posted by ry4n

I got it from Glen Sain in Kennett, Missouri,

it took me until about 2 weeks ago and countless dealers to find out GM closed the ordering books on these vans until Q4. Until then it was all sorts of “let me get back to you next month!” Or no response at all.

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April 9th, 2024, 12:22 AM

#33

canknucklehead

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Quote:

Originally Posted by mountainmanjoe

which truck? which engine?

2022 GMC SIERRA 2500 6.6L Gas with 120,000kms on it now.

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April 9th, 2024, 5:24 PM

#34

mountainmanjoe

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Yup that's the same 'L8T' engine that's in the vans. Iron block. No cylinder deactivation or auto stop/start.
https://en.wikipedia.org/wiki/Genera...ock_engine#L8T
I imagine the constant oil burning must foul up the whole system with carbon deposits, and reduce catalytic converter life. Not to mention jam up the piston rings.

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