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What fuel for 5.7
I have been running 87 octane in my 2020 and it runs fine when empty, but when you put a trailer behind it the trucks pings like a small block chevy. So i tried going to 91 octane and ping goes away. I have also found that the Costco 87 octane creates ping no matter what.- racing83x
- Post #229
- Forum: 5.7 Hemi V8