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daveymc29 · 12-18-2017, 11:27 PM

Bill Williamson has it right. If you must spend extra money, put in MMO or the ATF, but motor oil will work fine for an engine that is now running fine, Oil in the plug holes, put the plugs back, in a crank it a few revolutions. (with the key off) Spring it will fire right up. Trust me I say, from the 65 degrees of a cold winters day near SF Bay.

12-18-2017, 11:27 PM	#18
daveymc29 Senior Member Join Date: Sep 2010 Location: Danville, CA Posts: 1,554	Re: WD40 through spark plug hole??? Bill Williamson has it right. If you must spend extra money, put in MMO or the ATF, but motor oil will work fine for an engine that is now running fine, Oil in the plug holes, put the plugs back, in a crank it a few revolutions. (with the key off) Spring it will fire right up. Trust me I say, from the 65 degrees of a cold winters day near SF Bay.