Ok i'm gonna try to get explain this question the best i can. Ok i semi know about what octane, mixes, and race fuel goes with what compression in an 8 cyl. . But do these differ when say the engine is a 4 cyl. or a 6cyl. And if so can you give me some ratios with what Fuel should be used with what motor? Thanks for any info!

 

The number of cyliders makes no difference. What makes a difference are compression ratio, head design, camshaft, induction set up, how the head is cooled, spark plugs used, knock sensors, and various other things. In general, up to 9:1 use regular, up to 10:1 use mid grade, over 10:1 premium, over 11:1 start thinking about racing fuel.

 

Ok sweet, thanks Pete