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Old 03-01-2017, 10:44 PM   #8
WestCoast
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Join Date: Sep 2014
Location: oroville calif
Posts: 892
Default Re: Is there a good chemical to quiet lifter in my '51 Lincoln flathead

your first mistake is running non detergent oil in an engine with hydraulic lifters, detergent oil removes gunk and sludge built up in an engine. try running 4 or 5 oz of mmo in our gas. it could be the valve sticking in the guide
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