A magnetic oil filter drain plug and/or an oil filter magnet add one more potential layer of engine protection. Do they work? Residue on the drain plug says yes, but it’s anyone’s guess with the oil ...
TOM: These things have been around for years, Ron. They certainly don’t do any harm. RAY: They sell magnets that go inside the oil pan, magnets that are built into the oil plug, and magnets, like this ...
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