I'll use it if I'm not able to get the Torco Mach 100 I normally use on track days. I use half of the can to 4 gallons to get it close or above the 100 octane. The highest super we have is 91, no 93 available. Our race fuel is $7.99 a gallon, and not much choice to be picky. So if you need a boost then I recommend it. You don't get the race fuel smell like the Mach 100, and that smell is addicting.