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Cleaning engine out in '40 Sedan
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08-16-2020, 10:56 AM
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philipswanson
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Join Date: Oct 2015
Location: Bonita, CA
Posts: 1,374
Re: Cleaning engine out in '40 Sedan
Either pull the engine and do it right or just keep changing oil. Shell Rotella has a higher detergent level because its a diesel oil. You might try that. I run it all the time in my flatheads.
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