[Jim Wahl]

Originally Posted by GUMP

I switched from C11 to 110 in my 396 COPO. I had a lot of issues with the C11 and fuel check. Had to plug my vents every night and change the fuel for new at every race. I have had no such problems with the 110. And its way cheaper. The performance is equal.

I have run C11 for over 4 years now and never had a fuel check issue, even when I left it in the cell for several months. It is kind of "sticky" and does stain yellow but has always given better numbers on the dyno when compared to C12. Remember mine is a very low compression motor and there for is pretty picky. I would be perfectly satisfied to continue to run C11 even with the greater cost but both sanctioning bodies have made it much more difficult to get! Jim