The guy that wrote that topic is a freakin idiot. the manual is talking about the two o-rings that are on the oil filter housing on the I-4 motors only. they are the same o-rings you get when you buy the MOTORCRAFT brand filter. They come with the filter so they get replaced each time. There is a gasket on the drain plug for the oil pan but it does not need to be replaced every oil change unless that is just what you prefer! My I-4 has 17,000 and several oil changes under its belt and has not leaked a drop and I have never changed/put on a gasket on the oil pan drain plug at any time. Use common sense people!!!!!
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