I'm loosing about 1/2 Q every 300 to 500 miles. Talked to Harley direct and they said that One Quart every 1000 miles is within spc. I say BS! My local Harley shop is going to take it apart and look at the rings and other internals. Oh I am using Harley oil. Plan on going over to Amsoil. I have hearfd that helps alot.