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Old 03-06-2002, 09:39 AM
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kowached kowached is offline
Rising Member
Join Date: Sep 2001
Location: Michigan
Posts: 74
Octane is resistance to combustion, right?

Jim, I don't think that you will feel much difference between the 95 octane that you are currently running and the 111 octane racing fuel. The octane rating is the fuels ability to resist combustion, it is used in very high compression engines (over 11:1) to prevent pre-detonation in the cylinders. In other words its not the octane that makes the power, its the higher compression (that requires the higher octane to run properly) that makes the power. Let me know if I'm way off base here.

1998 BMW 540i Sport
1995 E320
1992 400E
1989 BMW M3
1979 Triumph TR7 (1st car)
1986 BMW 735i (Sold)
1980 BMW 320i (Sold)
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