Can running a 2.5l with an extra quart of oil for about 300 miles (~ 3/4 inch overfill on the stick) damage engine seals or gaskets, or will it just froth up? Here's hoping for the best -- the one thing my SE never did was leak oil. During the time the motor was overfilled, it seem to run fine, except for a momentary hiccup due to a bad plug wire.
When I was under the car today, draining out the mess, I saw there was a wet spot on the engine (passenger) side; however, that could have been spillage from the bum oil change done on Thursday. Any advice is appreciated!
