1998 base lumina 3.1 litre.
240,000 miles . Usually runs great.
burns almost no oil between oil changes.
most recent change was about 3500 miles ago.
Yesterday when I checked the dip stick it had just a little oil showing on the bottom of the dip stick.
'I ran the motor and checked it a few more times. same thing.
Then I put about 2.5 quarts in it and drove about 25 miles.
Then when I checked it appeared to have about 2 quarts too much on the dip stick.
Question = would a bad oil filter cause that or what?
Check engine light is on. Auto Zone says the "EGR" is messed up.
I changed the oil and filter today and the stickl level looks ok now.
I did notice the used oil was very dirty.
Thanks for any advice.