For those of you who actually race your Crossfire and want superior perfomance on the track...

http://www.cosbyoil.com/racing.htm

See you out there... :twisted:

 

93 Octane seems to do very nicely even with the ECU chipped. I really yhink any higher octane is really over kill.

I did use 104 Octane plus additive and didn't notice any difference.

 

I kinda think the idea of racing fuel is a bit of a myth. Sure, in actual modified race cars, it's required, but that is probably due to the higher compression ratios in their engines. All Octane is, is a hydrocarbon that will not auto combust at higher compression. It is related to Butane, Propane, Methane, etc. So, unless you have modified the compression ratio of the Crossfire engine, I doubt that 100 Octane will do anything that 93 or 91 Octane won't do.

 

The number one reason for higher octane is to prevent preignition.... Pinging.... This happens in High compression engines. Ours is moderately high at 10.0:1. Some race engines can go upwards of 13.0 or 14.0:1. Then you would deffinately need 100 Octane or higher fuel. Rule of thumb is.... If it's not pinging your octane level is high enough.