Originally Posted by
jmaxey51
O'donnell 99 or McCoy 8. i liked the OD 99 better. also you dont have to shim it for 30%, it wont hurt it at all or shorten life. they recommend 25% tops but thats mainly for break in. i ran 30% with no trouble with the same engine and so does everyone else. i know someone with 8+ gallons on theirs running 30% with stock shims. 20% is going to be super slow
trust me, i tried it lol
while i do agree that 20%, can be too slow but i think depends on how much oil is in it i know my, ebmods fuel is about 10% and byrons 20% is 12%oil.
i think its fast enough .