One more oil leak cause...

Runnin'OnEmpty

New member
After reading all the oil leak threads here, and crawling
under the Jeep numerous times, I finally found the
leak source. It was hard to find because the oil was
covering the oil pan and getting on everything
underneath after driving. I had checked everything
from the pressure sender to valve cover, etc, with
no luck. Began to think it might be the rear main
seal leaking. After a very thorough search with a
good droplight this afternoon, finally found it...

The oil drain plug gasket had cracked, and was
slowly seeping oil. It's one of those polycarbonate
(hard) gaskets, and I'd retightened it a few days
ago with no change in the leak. Looking back, that
probably made the leak worse. Anyway, I'm a happy
puppy knowing that the fix will be so easy.

What about using a copper or aluminum gasket
this time around, instead of the polycarbonate?
 

cruiser54

New member
Original washers were aluminum.

How long since your last oil change?

When mine started leaking after an oil change, I bought a new plug, which came with a new aluminum washer, and just worked fast swapping them out. Very little oil loss.
 

N8N_99xj

New member
In an emergency, I have taken an X-Acto knife and cut a piece of thin cardboard (what I used was an old Pik-A-Nut hardware box, but a cereal box or similar would be the same stuff) that lasted a whole oil change interval on my old Porsche 944 without leaking, then I just replaced it with the correct aluminum washer.
 

Runnin'OnEmpty

New member
Original washers were aluminum.

How long since your last oil change?

When mine started leaking after an oil change, I bought a new plug, which came with a new aluminum washer, and just worked fast swapping them out. Very little oil loss.
I have a Fumoto oil drain valve, and actually I changed
the oil recently. Fiddling with the valve probably started
the leak. I plan on using the 'fast swap' method you used.:D
Thanks for the reply.
 

Runnin'OnEmpty

New member
In an emergency, I have taken an X-Acto knife and cut a piece of thin cardboard (what I used was an old Pik-A-Nut hardware box, but a cereal box or similar would be the same stuff) that lasted a whole oil change interval on my old Porsche 944 without leaking, then I just replaced it with the correct aluminum washer.
Thanks for the tip. I had considered cutting a gasket from
some thick gasket material I have. Might still do that until
I can get a real gasket. Think maybe I'll go with copper as a replacement...?
 
Top