Quote:
Originally Posted by madatter
The 6.2L in my 15 Silverado needed premium....otherwise it pinged and detonated badly.
Some others say they dont need to....I did
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The last tow gm trucks I had were a 6.0 and an 8.1. Didn't notice any appreciable gain using premium. The 5.7 Hemi in my dodge definitely prefers the premium.
Colin