Hey everyone, my question is will oil pass thru a gear driven oil pump when it is sitting for years? I just picked up another NH 80 Honda Aero 1984. It wouldn’t crank thru and long story short I found the crank case full of oil over the top of the piston on this vertical engine. Looks like the exhaust port was the exit and the muffler is loaded up now too. I wanna keep it stock and sell it so I don’t wanna run premix.