Well my number 4 cylinder has oil in it. The plug is black and full of oil and the top of the piston is dark and has oil on it. The #2 and #6 plug tubes had oil in them but not inside the cylinder.
I had to order another compression tester with an M12 fitting for my plug size. That comes in Thursday night. So I will check the compression then.
Not sure what I will find when testing but #4 seems to be the problem.
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