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Old 06-05-2019, 08:45 AM   #5
Ole Don
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Join Date: May 2010
Location: St. Michael, Minnesota
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Default Re: 56 312 Coolant residue on rear main cap.

I would agree with Darrell. The plug above the crank flange is the cam plug, there is no coolant there. The small amount of coolant on the main cap bolt, suggests it came from someplace else and ended up there by accident. If the heads are off and the motor is on a stand, that may explain it.
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