Today I Bought An Oil Filter Magnet... Previous Experiences?

[GTR1993]

Only thing that i would say is if you know your minimum oil thickness on your bearings, and what micron the filter can filter out you can see if a magnet will actually help you. Because very very fine particles can be in the oil with no ill effects and the oil film is thicker then the particle.

[260tech]

Recently we replaced a corroded valley cover on a red motor, in the process of removal sheared a bolt holding on the old cover. Long story short, drill grind out & helicoil. Shyte every where in spite of efforts to control swarf/dust/shavings. Fitted several rare earth magnets (purchased off ebay, on hand for another project) to new filter prior to start up, ditched oil & filter after a couple of trips to work & back, 'nother filter magnets refitted around new filter. Still there & no probs so far. Rare earth magnets stick on real good, magnetism can degenerate by exposure to heat however. Not sure how much, 100 deg c maybe. Doesn't seem to bother the sump plug application however, which has been around for years.

My 2c

GW

[Simon-S14]

around 300 degrees i believe the magnets start to loose their magnetism

Still. looks like a great idea in theory... Im keen to see how well it works. Anyone cut open their filter afterwards?

[Omurru]

Looks like a good idea to me as well, I mean it can't hurt. Although as said if the particles are small enough to get through the filter there probably not really gonna effect the engine I always thought the magnetic sump plugs were more for an indication of when your starting to wear bearings for whatever reason. The turbine engines on the planes at work have a Mag Plug in each of the "oil out" lines from the main bearings and are used as a way to pre-determine bearing failure. If there is no/very fine particles on the plug no worries but if you start getting bigger ones then you know you have a problem.

Although I suppose the question with car engines is does the oil get filtered before it goes into the engine or after it comes out, as if it was the latter you'd never know cos the filter would pick up any bits....

[Simon-S14]

oil gets picked up from the sump and straight into the oil filter, then the pump, then the galleries i believe.