Quote:
Originally Posted by urseppos
I did top her up the other day w/a quart of Castrol GTX but that did not reach the fill level on the dipstick.
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Potential overfill as johnsjmc suspected.
Apologies if you already know this, but reading the dipstick is only accurate when: 1) the engine oil is up to operating temp [thermostat open]; 2) engine is idling; and 3) car is on a level surface.
If you topped up the oil based on reading the dipstick when the engine was in any other operating condition, you likely overfilled. Causes symptoms exactly as you describe. A quick search of the forum reveals this is not an uncommon error, but thankfully -- if this is indeed the cause -- a relatively inexpensive one.
There are lots more expensive errors to make . . .
Good luck; hope this helps.