The Porsches I owned in the seventies and eighties all had magnetic drain plugs for the sump and the tank. There would be some very, very fine metallic particles collected on them at each oil change. I have not seen a magnetic drain plug on any of my vehicles since 1989.

Anyway, since a large majority of the engine components today are aluminum, nickel, etc, a magnetic drain plug would not attract much of anything.

An old good idea, though.

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DeanLinAZ
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