Sunoco supreme

[Ed Wright]

Originally Posted by Chad Rhodes

hell the fastest pass my I/SA camaro has run was on 93 octane pump gas. Have run both C12 and sonoco supreme, don't really see a difference.

Chad, I wouldn't put C12 in an engine with no more compression than that. Too much octane can sure slow you down. It burns slower. C11 works well in lower compression engines. Usually need to add 5% or so WOT fuel (top 3 rows of your fuel map.)