DIY Magnetic Oil Filtering

[eicheldp]

Originally Posted by JFP in PA

I think what you are missing is that the magnet catch and build up ferrous debris that has a particle size is too small to be captured by the OEM filter, and which would continue to circulate around the engine if the magnets were not there, and which act as a very fine continuous abrasive. Filter magnets have been used for years in aircraft engines to remove this fine grit before it does any damage.

JFP,

Do you know what particle size will pass through the stock OEM paper filter?