I was running VP C12 112 octane in my DS with a HPR 13:1 piston. My local speed shop stopped carrying it and is now only carrying Sunoco. They make 2 versions of 112 octane race fuel. One is Supreme 112 race fuel and the other is M02X 112 oxygenated race fuel. I am not sure which one to run. Does anyone know which one is better to run and why?

 

use the supreme.

the oxygenated race fuel is kinda like alky. you would have to rejet.

sorry im not going into detail.

 

If your only trail riding you wont really have a need to run oxygenated fuel. It will make her run a little hotter than normal. I would just go with the high octane non oxygenated.


Btw- I (years ago) have ran and tested c-12 and lost power. It is probably due to the c-12 being designed for a 2 stroke.