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Old 12-02-2020, 07:02 AM   #25
nkaminar
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Join Date: Jan 2012
Location: Western North Carolina
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Default Re: Black spark plug ooze

Steve R,

It will take about 1,000 miles or more before your engine is broken in. It needs to build a shine on the cylinder walls. Cast iron has the ability to do that because of all the carbon in the metal. The engine will pump some oil before it is broken in completely. Take it easy during the break in period and you will be rewarded by a good running engine.

Anti-seize is a good idea for the plug threads regardless of leakage or not. It will save you form having a seized plug.
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