Rear main seal - Buick Forum - Buick Enthusiasts Forums

Electra/Park Avenue Buick's full size premium car manufactured between 1959 and 1990

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Old 10-02-2012, 06:05 AM
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Join Date: Feb 2012
Posts: 19
Default Rear main seal

Well... I've been chasing oil leaks on this car since I got it. I've finally managed to close up most of them (oil pan gasket, manifold gaskets, valve cover gaskets, and pressure sensor) but on very large leak still remains and it appears to be coming from the back of the motor, and at a high rate (low oil light showed up 10 days after an oil change). I took a look at the Haynes manual and am more than confident we can pull the motor and replace the seal, just after any suggestions from people who may have already done this.

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2004, avenue, leaking, main, park, rear, seal

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