I have an older 360 with low miles, 75,000. It was very original and leaked oil everywhere. I pulled the motor out and cleaned everything, added new seals and gaskets, along with new umbrella valve seals. I put it back together and it runs great but uses oil. I assumed my usage was leakage. The car smokes slightly on start up but doesn't seem to while driving, or so say my friends who were following me. The leaking is minimal now. So where is the oil going? It's been suggested that the valve guides may be bad, stuck rings, I'm not fouling plugs. I don't know where to look. Any ideas or magic you guys can share?