tom3
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- Joined
- Jul 15, 2019
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When I saw the 11 : 1 compression ratio on our 5.3 I decided to run at least mid grade fuel. When I'm around a Sam's Club I fill with premium, usually about the same price. Engine runs great and gas mileage is really impressive. But we don't put a lot of miles on it so the cost is not a big factor. I'd run the best fuel available in that 6.2 hot rod.