Here is a great article that even mentions our car

http://sportscarforums.com/showthread.php?t=3257

 

I just dumped 2 quarts Toluene and 4 ounces of Marvel Mystery oil in my tank and filled up with 93 - My car is tuned to run pig rich right now and the tuner said I could run race fuel with my tune - I will keep you posted

 

If I remember right, You gain roughly 1 octane point per a 5% mix which is where you should be adding 2 qts if you had 10 gal in your tank.

Try a 20% mixture and you should be up around 98 octane. For fun, check your plugs before and after the tank and see if you notice any color change.

Good luck

fltsfshr

 

I just put in a fresh set of plugs a couple of days ago so I will check them after this tank! and keep an eye on my Air/Fuel Ratios.