That would be a pretty good leak. The bottom of da veh should be coated. Or If that much was burning, it would look like James Bond smoke screen. Lol. Any pics? If it soggy, start at da top. Replace whats leaking at da highest point, if thats what happening?. If its burning, try to pinpoint a root cause to know what to look for internally. Oh, you are sure on the amount of oil you started with? Right dipstick? How many were put in when you changed it? Just food for thought.