what octane gas should I use in my 2004 chevy silverado 2500HD w/ 300 hp high performance engine

Asked by Jul 18, 2016 at 05:00 PM about the 2004 Chevrolet Silverado 2500HD 4 Dr STD 4WD Extended Cab SB HD

Question type: General

1 Answer

46,195

Regular unleaded.

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