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honda965
01-07-2007, 08:14 PM
i was runnin reg gas in my 300ex, i now put a 330big bore should i use premium,plus or race gas?

DJR300ex
01-07-2007, 08:21 PM
depends on your compression

bwamos
01-08-2007, 06:49 AM
If it's an 11:1 330cc then you can just run Premium Pump gas.

m.h.s.c.#527
01-13-2007, 11:55 AM
if u r runnin it hard it run 100 octane or better