Bailed my lovely out of storage and tried to fire her up. So much oil had seeped into the motor that it wouldn't fire upon turn over. It was coming out of the air cleaner and spludging all over the place. Pulled plugs and cleaned. Tried again and it fired and turned over. Oil kept coming out of the breather. I think I may have lost about a half a cup or so. Motor smelled like a two cycle engine for a time. All ok now. Next time, I will drain all the oil before storing!

What's your mileage? Who cares. Is it practical? See #1. What happens when it rains? You get wet.