Thursday, January 19, 2012

Which side does a copper oil drain plug washer have to be on when doing an oil change?

When I look at a copper washer, both sides look different. One side is smooth and shiny and the other looks dull and rough. Which side should the copper washer be facing the oil drain plug hole when screwing in the oil drain plug? Also, which side do plastic oil drain plug washers have to be facing when doing an oil change?Which side does a copper oil drain plug washer have to be on when doing an oil change?
dosnt matter which side if its just a flat washer

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