oil question


New member
How much oil do you guys put in your flatheads? I'm running thor lite in mine and I only really fill it from the bottom while its mounted till it hits the top, should I start using the back oil fill near the gas tank? and put oil in till I see it there? Just started thinking about this. This is a fresh motor so just want some opinions.
If it's on a 15* mount and your checking with the front filler till it hits the top, it is around 8-10oz, not enough.
We run 13-14oz on our flattys on methanol using FHS62R oil
Use a measuring cup marked with ounces.