Does placing a magnet on your oil filter, help in ridding metal filings from traveling through the engine?

It makes sense to me that placing a magnet on the oil filter, would trap some of the small metal filings from circulating in the engine. What's wrong with my theory?Does placing a magnet on your oil filter, help in ridding metal filings from traveling through the engine?
your theory is correct and they already make them to fit your filter, they just slide up over the filter and there is like 10 small magnets on it, I've used them before and they do work.Does placing a magnet on your oil filter, help in ridding metal filings from traveling through the engine?
nothing's wrong with it. there are several oil filter magnets that strap around the oil filter, given they probably can't hold everything, but I'm sure they do something.


I'd use one except I have a heatsink on my oil filter and dont' want to sacrifice dissapating heat vs holding onto metal filings that the filter should be holding onto.
well im not sure if this is on every car/truck but my truck has a little magnet on the end of the drain plug in the oil pan and that would end up stopping any metal fillings from even getting to the filter let alone the rest of the engine, the magnet is pretty strong to, came like that stock i would imagine, but like i said im not sure how many other vehicles has that on the drain plug
It would have to be a fairly strong magnet depending the the thickness and material of the filter itself. The other key point is not all metal in an engine will be attracted to the magnet. For instance if the block is aluminum a magnet will not trap any filings from the block.
Oil-filter casings may not be a magnetic material. They make magnetic oil drain plugs, you know.