Pan Gasket Leak

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Jun 24, 2004
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Memphis, TN.
Would use of a high mileage oil help cure a slight upper pan gasket leak on a 2006 Buick LuCerne with the Northstar V8 engine? 83k on the ticker.
 
Lot of silicone and Anaerobic sealer in the N* HM oil don't have any effect on these.
Once the N* comes unglued its hard to reseal them without a tear down.
 
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