[Drbrown]

Not to be negative regarding pre-oiler systems ..... My '47 doesn't sit toooo long between usage. The engine is in good condition, has an 80 lb oil pump and at idle RPM its mechanical gauge shows 80 lbs when cold and 20-25 lbs when at running temperature. If it did sit for long I'd put fresh 10w oil in, remove the plugs, squirt some MMO in the cylinders and crank the engine without plugs for a few cycles of at least a minute each AFTER the mechanical oil gauge shows pressure. After starting and running to normal temperature, I'd then change to the usual 10w-30w I use. For short periods of non-use I just crank the engine with ignition off until oil pressure is full up. Stop, let the pressure dispense, then start the engine.