Posted on Dec 31, 2008

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How to change an o-ring above oil filter and above oil cooler.

I have a 91 passat, 2.0 16valve engine , weather got to
-25C and i think the oil filter was full of frozen oil. the car started great and i went in the house to let it warm up. i saw from the house window that the car was rapidly leaking oil.- it was coming from an o -ring above the filter, the filter screws into a square housing( oil cooler?),which is connected to a circular housing and rubber o-ring(the leak) with a sensor wire sticking out the top. i cant find a repair manual or even a diagram to figure out how to get the new o-ring in there. does anyone know how to get this part off? or a spot i can view a diagram of this part ? any help would be appreciated. I have the same problem on a 1999 passat... Car has over 180k on it... Doesen't drop below 32 degrees where I live here in sunny california.

From what I can see, I think the part is called an "Engine Oil Cooler Seal"

Check this website for a picture.

tcwalston Dec 31, 2008

Thanks VAGMAN54!!!

Also, I jusr found a good pictorial of the replacement process...

http://www.passatworld.com/forums/showth...

1 Answer

colin white

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Posted on Dec 31, 2008

colin white

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Take the oil filter off,the fitting that the oil filter screws on take that out your housing will then come off the oil cooler so you can replace the o ring

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