Sounds like that or for some mysterious reason the head gasket or head cracked, Overfilling will hydraulically lock the motor and destroy it, DO NOT run it until you are sure of the amount of oil in it!
January, 1, 2011 AT 1:37 PM
Why does this cause white smoke? Should I just drain some oil?
January, 4, 2011 AT 11:17 PM
Oil is pushing, or trying to push past the oil and compression rings, you can try completely draining it, replace the filter and check the drained oil for metal particles or bits, this will indicate engine damage due to the locking effect.