Oil leak-is there a common place on GN's?

[Steves87]

I have a low mileage GN (26k) and it has a small oil leak. It is not coming from the pan, but is coming from underneath. The top of the engine and everything looks real clean. Is there a common area that leaks on these cars?

 

[87GNcospg]

rear main seal. some people have used thicker oil like 20-50w to stop the common leaks. i am not one of those people though.

 

[Turbo6inKY]

My valve cover gaskets leaked pretty badly.

31,000 miles and the original rear main is dry as a bone.

 

[Bens87tr]

Everywhere is a good place to start Boost can do funny things to oil leaks. Probably the rear main though.

 

[progress1vebmx]

I had a few... turbo oil return, oil feed...

 

[87GNcospg]

just thought of another annoying spot for oil to escape, for me at least. the breather for the oil on the driver side valve cover leaks on mine. i could probably redo the rubber seal on its base.

 

[scottyb]

the question is: where does it not leak?

Clear leaks for me were rear main seal/cap mating surface, and right valve cover gasket in the rear.

 

[Steves87]

Thanks guys I will check it out this week and see if I can pinpoint the leak.