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06-23-2020, 07:33 AM | #1 |
Senior Member
Join Date: May 2010
Location: upstate SC
Posts: 2,962
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lowest oil pressure for engine to survive
1942 Mercury engine, starts out with good oil pressure 50#, slowly decreases to about 15# as it is being driven, 20w50 oil, added some lucas extender and op went to 18# driving. Worn bearings? bad oil pump? bad relief spring? other wise runs great. no blowby. oil pressure was done with mechanical gauge
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