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sradiator 02-12-2012 04:49 PM

Magnetic Drain Plugs & Filter & Mags
Has anyone switched the stock oil drain plug to the magnetic type or using filter magnets?
As a life long motorcyclist, we have always had magnetic oil drain plugs in our motorcycles and you can clearly see what they attract/pick up.
Motorcycles share the same crankcases with the transmission though so clearly there is more of a need for one in motorcycles than in cars.
Just curious what members have been doing, if anything and what they have been finding, if anything on the tips of their drain plugs or in their filters?

nstoolman1 02-12-2012 06:53 PM

I have taken apart old hard drives(the larger the giga-byte drive the larger the magnet) and then take the magnet and stick it on the filter. Can't see what it's doing but I don't feel it is hurting anything.

1fastkia 02-13-2012 08:04 AM

Its worth the 5 bucks they cost. Ive seen a few cars use them, and do catch shavings. They work great on trans plugs too.

Sticking one onhe filter doesn't seem to me would do much. Its on the outside. Whereas the drain plug, its actually sitting, in with the oil.

sradiator 02-13-2012 08:55 AM

Thanx...I may get one as they are about 10.00 shipped for steel plugs.
I do not want an alloy plug though.

nstoolman1 02-13-2012 10:31 AM

I agree that magnetic plugs work well.

That magnet makes the surrounding metal shell magnetic. The ferrous material will stick to the inside and stay in the filter. When you change the filter it stays in there and you dispose of it at that time.

And really, when you get right down to it, if we have that much iron floating in the oil we have more problems to worry about than magnet placement.

1fastkia 02-14-2012 07:21 AM

Its good thought that even if there is 1 tiny metal particle, that it will get caught using this.
I am sure every motor sees a tiny amount of shavings.
Just piece of mind, knowing if anything is in there, it will get caught by the manent.
On a neon I had, we changed the trans fluid, to find an enourmous amount of shavings in the oil, though, there never was anything wrong with the car, sold it at 110K miles running strong.

jetech00001 02-15-2012 12:54 PM

the airlines have been using magnetic drain plugs and some auto manufactures for years. the great thing about them they will pick up the microscopic partials as the oil filter removes particles to about 35 microns and the rest just circulate around the with the oil and the magnet gets the rest (ferrous metals)

orange kia 05-22-2012 03:37 AM

by a filtermag
it is six rear earth magnets in a plastic resin container that clips on to the out side of the filter goes about half way round i have them on all our cars you would be amazed how much metal there in a new engine if you cut the top of the old filter
with the filter mag still attched you can see it sticking to the side of the filter case
there some good vidos on utube just type in filtermag on u tube

AlecKadal 07-27-2018 03:32 PM

What you could do...
Disassemble a hold/defective computer hard drive and keep the magnets.
Install one magnet on the bottom of the oil pan and/or on the oil plug head.
Works well.

eflyguy 07-27-2018 04:04 PM

They are useful in motorcycles because they (mostly) share a common oil system for both gearbox and engine. The gearbox will shed material over time.

In a car, there is very little chance of anything ferrous being shed unless something disastrous has happened, and the magnetic plug won't make any difference...

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