Engine oil question--between the marks?
Oil is disappearing from my engine. I have been adding a small funnel full every week or so ... after around 75 mile of driving.
(I don't know what's happening to the oil ... it doesn't seem to be leaking while the car is parked. The dealership says the oil pan gasket is leaking but the shop that replaced that 18 mos ago says no, it's not. I just had a head gasket replaced, if that is significant.)
Today I added a little too much oil. The upper hole on the dipstick is covered, but just barely.
I don't want to drain any out because the dealership said the drain plug would barely go back in last time.
The manual says if you go over the upper mark, damage to the engine can result.
Do I have anything to worry about? It is just barely covering the upper hole on the dipstick.
And what kind of damage would too much oil do?
Thanks.