I run 91...it depends what dome you have.for 4 gallons I put 16oz of benol...works and always has.I think thats 32:1..I used to run turbo blue but I realized you dont need that unless you have a big bore motor.

 

I would only run race gas in a 2stroke, cause that pump gas 87,91,and 93 octane have that ethanol stuff in it and that kills a 2stroke motor.

 

All race fuel is leaded...I think. The lead provided lubrication....I think. But, Yes it is safe to run it.

 

I been using the Rocket Fuel 111 octane for a few years & it is leaded.
Neil

 

the Lead should be beneficial to upper cylinder lubrication. i think you'll be ok running the leaded fuel. most if not all race gas is leaded i believe and lots of people use it.

 

Lead increases the detonation resistance (octane) of the fuel.



This is one of the ways that the AMA helped to kill the two stroke in Pro-racing, by banning the use of leaded fuel.

I was not aware that the AMA had banned leaded fuel. Is that strictly Pro racing or is that for any type of national AMA racing?

 

That frigging AMA...

I always recommend to run Race Fuel, 110 is fine. Mostly beacuse of the consistency, cooler running, and detonation prevention properties Race Fuel provides specially at eleveated compression ratios.

Carlos.

 

Here in CT, leaded fuel is not taxed, unleaded fuel is. I run Supreme 112 leaded in my R, and for my kids crf hybrid I asked the Sunoco distributor (for all New England) what they had since his stock motor only requires 91 octane.

Lowest octane leaded was the 110.
Lowest octane unleaded was 98 (I think)

But the unleaded had a higher price per gallon because the state puts a tax on unleaded fuel...almost a $1 a gallon.