Can I mix 91 octane and 100 aviation fuel to get a higher octane rating?

[stingeradmr]

so there are times when I want to get all the performance I can from my upgrades. 91 octane is the highest I can buy, but I have access to aviation fuel. Can I mix 91 octane and 100 aviation fuel to get a higher octane rating

 

[DaJackson]

Isn’t aviation fuel leaded?

 

[Bear]

Isn’t aviation fuel leaded?

Correct. You can’t put Cam2, C16 or any other leaded fuel in your car.

I run Cam2 in my Cobra, but I also don’t have cats and have a tune for it.

If you put leaded fuel in...you’ll destroy your emissions control.

You can use octane boosters which have been proven to increase octane, but they aren’t all made as equals. I would also suggest to not routinely use octane boosters.

 

[baabootoo]

Yes, you can mix, and it is a linear ratio; 5 gallons this, 5 gallons that, divide both octane numbers by 2, to get the average. No lead though, like was said.