Ok, sorry for the dumb and maybe obvious question, but if I mix 15% nitro fuel with 0% nitro fuel, I should get 7.5% correct? Is it not that obvious or am I assuming something, missing something.

I ask therefore I am....sorry couldn't resist. Anyway, I have s ST G-90 and apperantly it would run better on 5% nitro and since I have 4 gallons of Riches Brew Pylon 15%, I thought I'd get some 0% (heck do they even make 0%??) and mix the two.

Ok, enough Bob Blah Blah...thanks.