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Merc 170 I/O, did they use permanent sealer on the oil drain plug or what? I was cranking so hard on the drain plug I started to twist the metal on the plug. I bought a elcheapo hand pump from West Marine and sucked the oil out of pan. What a pain, oops I said sucked. Can the plug come out or is this something four winns might of had done to there engines cause they had ploblems with people stripping the threads or something?