VP claims their "red" leaded brand of fuel is good for motocross and other apps and is good up to 12.5:1 compression ratio, the 426 is 12.5:1. The octane is 105 and the manual says it needs pump gas. Anyone have any disagreements with the fuel being bad for the engine life? I'm going to run just motocross this year and would like a leaded fuel, this one seems right to me. Anyone wanna' help?