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Has anybody tried these FilterMags?
There suppose to help with metal in the oil smaller than 25 microns because apparently filters can only catch 25 microns and larger.I was thinking about trying them – because, hey who likes pesky metal microns in their oil?
I also figured I could put one of their flat ones on the bottom of my Trans pan. Yes, I realize it has one instead, which I cleaned when I changed the filter, but I figured it couldn’t hurt.
Opinions?
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I’ve been using a similar device on my Jetta for over 10 years. It was a gift. The more I’ve learned about cars, the more obvious it becomes that it’s not going to do any good. The bottom line is that if iron based (magnetic) metals particles that can cause damage are in the oil, then engine damage is already occurring that this product couldn’t have stopped and can’t do anything to help now. That being said, I still transfer it over to every new oil filter on that car. Why? Why not? There’s no way it can hurt, and it’s already there. Some particles are going to be produced by cam lobe/lifter contact and ring/cylinder wall contact, but I’ve never been seen anything that convinces me that an addition measure over a quality oil filter should be in place. I never considered getting one for any other car I’ve had, but I also won’t let a cheap oil filter on any car I’m directly responsible for. My work constantly had me installing $3oil filters on all kinds of cars, but we don’t have problems with them either. I’ve seen the cheap filter elements fail a couple times when it’s left on the car too long, but it never seems to actually hurt the engine.
If you’re wondering why they put magnets in transmissions but not engines, there’s a few reasons.
1) There are many more metal-to-metal wear points, some of which have regular shock loading
2) Bearings are not supported by oil pressure like in the engine, and they are have full metal-to metal load support
3) The internal filter is expected to last for a long time, and for the ‘lifetime’ of the transmission in many cases
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