can use use it strait or do you need to mix it with somehting... ive heard mix it half and half with 90 octane.. or mix 4 oz. of oil in it...
thanks.


and can any1 tell me what i need to run for gas with like 11.1 and 12.1?

 

i used to run av fuel in my old race bike but it was modded out. as for damage i don't really know because my sponsors rebuilt the top end every couple weeks. you do have to be careful with 2-strokes some oil wont mix with av fuel.

andy

 

We run it in our 250r's with no problems at all. They pull harder on AV gas than premium. Havent tried it in a 4stroke yet

 

Bad idea......... Do a little research on the "search" function and theres a couple informative threads on why NOT to do this. One even has some chemical data links. In short Av fuel is designed for motors that run at a consistent rpm, and for high altitudes. It also has a lower combustion temp. which mean detonation in a motor not designed for that kind of fuel.

 

I was told not to use it.

 

Me too.

 

not good for valve guides either

 

" It also has a lower combustion temp. which mean detonation in a motor not designed for that kind of fuel. "

I don't know where you got this.

Avgas has better anti detonation properties than pump gas.
Unlike auto gas, Avgas will be consistent from batch to batch.
Avgas keeps longer than auto gas.
Avgas smells better than car gas.
Cool blue color.

However

Avgas is more expensive than auto gas so why spend the money if you don't need the extra octane?
Avgas contains lead, so you do not want to use it in any motor with an O2 sensor.
Avgas doesn't vaporize as easily as auto gas, which helps prevent vapor-lock but may make starting more difficult in very cold weather.

I have run Avgas in many vehicles with no problems.
ATC 200X
ATC 350X
ATC 250R
KLR 650
TRX 350
KFX 400
XR 100
NX 650
Blaster
Banshee
'67 cougar

 

I've run avgas for over a year in my 400 sport with no adverse affects. I'm going to be doing some time comparision at the drags next year to see if there is any difference as far as et is concerned.

 

What is the octane rating in AV fuel? Is there different grades?
I am looking for a more readily available alternative to race fuel.