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guy is providing me with more info, confirmed he used 0w-20
So basically what we have here is the worst possible conditions for carbon buildup.
-Long intervals between oil changes (9-12k)
-No catch can
-over 100k miles
-0w-20 oil, aka super thin, which undoubtedly allows more oil into the intake since there are numerous records of the truck motors burning it through the intake via AFM
extreme carbon buildup theory circulating all GM DI v8 forums = pretty much busted (we'll of course need more high mileage examples to make it 100%)
Thank you 00pooterSS of performancetrucks
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