Re: Which fuel is recommended?

Posted by Packard53 On 2008/7/23 19:43:32

Rusty: I have a 1966 Chevy Chevelle with a 230 6 cylinder engine with a compression ratio of 8.5 to 1. The original owners manual calls for 90 octane gas. My Chevelle always seemed to run very well on 89 octane gas, with no ping.

John F. Shireman