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Contact NAPA Auto parts for a packet of gaskets and O rings for about $3.50. Auto Zone and O'Reilly's don't stock it. The real problem is removing the adapter to get to the gasket and O rings to replace them. It's a tight fit on my '91 Chevy Blazer.

my understanding is there is an "o" ring on the adapter where it contacts the block. once this ring becomes damaged, it's you're either gonna need to replace it or keep filling with oil!!

Check to make sure the old rubber gasket from the old oil filter was not left on the adapter before the new filter was installed

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โˆ™ 2015-07-16 18:29:01
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Q: If oil is leaking around the filter adaptor on 1991 Chevy 4 WD half ton pickup is there a gasket or O ring that should be looked replaced?
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