my oil was always at the full mark after having it changed at the dealer, or lube shop.
after a few days i would check and it would be too high.
when i started doing it my self.
i added 3 gallons, then after a few days i check it and it's always at the full mark and doesn't get any higher. ???
could it be that the oil's not completely draining when they change it????
cc
Yep, They are not removing the fill cap and let drain for at least 15 minutes before sealing it up and adding the new oil.