Magnets in oil filter ring?

[lakey]

While changing the hydraulic filters on my Kubota tractor yesterday I realized there was a magnet ring just inside the gasket and each ring had collected many metal filings from the gears.

I am wondering if such a magnet would be of any use in a passenger vehicle oil filter to trap filings? Or does an automotive engine typically have metal filings after the oil has been changed a time or two?

Thanks.

 

[kohnen]

Google "Motion Pro oil filter magnets." They're for motorcycles, but they work great for cars. The manufacturer says they only last 5 changes, but I think they last forever. Just don't drop them - they're brittle.

 

[Onug]

I've always wondered what a magnet will catch that a filter won't...

 

[kohnen]

Originally Posted By: Onug
I've always wondered what a magnet will catch that a filter won't...
Tiny iron fuzz too small enough to be caught by the filtering element.

 

[chilson450]

The Allison external transmission filter in Chevy pickups use them. They need to be cleaned and switched to new filter when replacing. They are circular and sit between the threads and the o ring. It covers up the inlet holes without restricting flow.

 

[edwardh1]

anyone seen a 3rd party test of them?

 

[Dyusik]

I always epoxy a a rear earth magnet to every drain(/fill) plug, or a dipstick if none exist(Harley / mower). Always have fair amount of ferrous debris on them. While writing this post, got an idea to try in in a coolant path somewhere, just to see if something sticks.

 

[901Memphis]

Magnefine makes a product called the force field which sandwiches between the filter and block

http://www.emergingent.com/magnefine/force_field.htm

 

[lakey]

Thanks for all responses.

 

[weasley]

Remember though, it'll only catch the paramagnetic stuff - it won't catch the other alloys which are increasing used (aluminium being the big one).

 

[Yah-Tah-Hey]

Put em in your shoes. Do wonders.