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From the 2022 rulebook:

3. Fuel Restrictions C. In the Touring, Grand Touring, Grand Sport, Super Sport and Unlimited Divisions, gasoline only is permitted. Alternative energy vehicles will be considered. No nitrous oxide injection or similar power increase is allowed. If the vehicle is such equipped, the bottle must be removed from the vehicle. NO proportion of nitro methane or similar additive is allowed. Octane boosters such as “104” are permitted if less than 2 percent of the total gasoline volume.

Definition of E85 -

E85 (or flex fuel) is a term that refers to high-level ethanol-gasoline blends.

Almost all gasoline is an ethanol blend that is bought at gas stations these days unless you seek out one of the gas stations that advertise non-ethanol blend gas.

I am not a member of the Tech committee, so take what I say with a grain of salt, but since you can buy E85 at a gas station just like any other gasoline, I would think it is ok to run.  In fact I remember talking to someone at the May race that was running E85 in their car.

Why are you looking at E85? Just curious as t your thoughts.

Thanks Richard.  Your logic makes sense to me and is along the lines of what I was thinking.  I really appreciate the input.  I think the outlook is favorable especially since you mention someone was running E85 in the event in May of this year.  Very good to know.

The interest in E85 comes from the high boost in our Mini.  Our turbo configuration for next year is 500 w.h.p. from 1.6 liters.   The advantage with E85 comes from lower combustion chamber temperatures and a reduced the chance of detonation which can cause power loss and damage.  It allows us to run a more aggressive ignition profile.  The particular E85 we have is oxygenated as well.   The result in our case is about 30 additional horsepower, lower engine temperature, and protection against detonation.  We have made lots of dyno runs with various E85 products and we consistently see better power numbers  than unblended racing gasoline.

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