Does having a Earth magnet stuck to the outside of an oil filter worth the trouble? Will it really collect the particles iron?
Are Earth magnets on a filter worth the trouble?
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I've seen them collect particles even after a short time. The problem with putting them on the outside is the fact that the can really cuts down on the magnetic field compared to having the magnets directly in the oil.
Originally Posted By: chevrofreak
I've seen them collect particles even after a short time. The problem with putting them on the outside is the fact that the can really cuts down on the magnetic field compared to having the magnets directly in the oil.
These Earth magnets are very very strong, when putting them on they can pinch your finger
I've seen them collect particles even after a short time. The problem with putting them on the outside is the fact that the can really cuts down on the magnetic field compared to having the magnets directly in the oil.
These Earth magnets are very very strong, when putting them on they can pinch your finger
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yes, but it doesn't take much to dissipate a magnetic field
Don't forget that heat can weaken the magnets over time. Not all magnets can withstand the heat from an engine.
I'm thinking of putting 5 of these on the outside of the filter.
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From: http://www.kjmagnetics.com/faq.asp#temperature
19. Do I have to worry about temperature with neodymium magnets?
Yes. Neodymium Iron Boron magnets are sensitive to heat. If a magnet heated above its maximum operating temperature (176°F (80°C) for standard N grades) the magnet will permanently lose a fraction of its magnetic strength. If they are heated above their Curie temperature (590°F (310°C) for standard N grades), they will lose all of their magnetic properties. Different grades of neodymium different maximum operating and Curie temperatures. See our Neodymium Magnet Specifications Page for more details. We do stock a range of high temperature magnets, which you can see here.
19. Do I have to worry about temperature with neodymium magnets?
Yes. Neodymium Iron Boron magnets are sensitive to heat. If a magnet heated above its maximum operating temperature (176°F (80°C) for standard N grades) the magnet will permanently lose a fraction of its magnetic strength. If they are heated above their Curie temperature (590°F (310°C) for standard N grades), they will lose all of their magnetic properties. Different grades of neodymium different maximum operating and Curie temperatures. See our Neodymium Magnet Specifications Page for more details. We do stock a range of high temperature magnets, which you can see here.
Not much effort involved and certainly could't hurt.
I bought 6 nickel size magnets at a hobby shop 2 years ago. They still hold to the filter very well. Not much effort to remove from the old filter and place on the new filter when changing the oil. I never cut open a filter, so I have no proof how much difference they actually make. However, I would think they help hold back metal particulates from the filter material, which assists with flow. They may also catch metal that's too small to be caught by the filter.
I've been using these for years. Don't have a clue if they work, but they make me feel good.
http://www.filtermag.com/
http://www.filtermag.com/
Originally Posted By: chevrofreak
I've seen them collect particles even after a short time. The problem with putting them on the outside is the fact that the can really cuts down on the magnetic field compared to having the magnets directly in the oil.
If it does is not enough to make a difference. You can easily test this yourself by putting one on the outside of an empty tin can. It will easily hold nuts & washers placed on the inside of the can.
I've seen them collect particles even after a short time. The problem with putting them on the outside is the fact that the can really cuts down on the magnetic field compared to having the magnets directly in the oil.
If it does is not enough to make a difference. You can easily test this yourself by putting one on the outside of an empty tin can. It will easily hold nuts & washers placed on the inside of the can.
Originally Posted By: Johnny
I've been using these for years. Don't have a clue if they work, but they make me feel good.
http://www.filtermag.com/
I forgot my latest UOA was with a filtermag installed. Iron is less then half what it has normally been per 1k miles.
I've been using these for years. Don't have a clue if they work, but they make me feel good.
http://www.filtermag.com/
I forgot my latest UOA was with a filtermag installed. Iron is less then half what it has normally been per 1k miles.
As I've said in other posts, I use magnets from inside hard drives on my filters. I have burned my hand trying to pry them off a hot filter. Believe me, if there's any negative effect from the heat on quality rare earth magnets it isn't much. Getting your finger pinched by a burning hot magnet is no fun.
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Yes, it would be interesting. If someone does this, they need to have a perpetual UOA program going on and then alternate magnet on/magnet off routinely for a number of UOA's. That way you may be able to see the difference. Too many things to go wrong for a one shot before/after thing.
Which part of the filter would installing magnets be most beneficial?
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I'd tend to want it on the exterior shell, myself. I imagine that it would work fine on the bottom
I have mine on the bottom only right now, but usually there are two on the sides opposite each other and one on the bottom. When I do the next oil change in the cars I'll post some pictures.
Also, if you live in the Houston area and want some of these HD magnets to try, I'll be happy to give you one or two for every car you own. I must have sixty something of them. I'm up here on the north side. Just PM me.
If anybody else wants to arrange and pay the shipping price, I'll be glad to send them wherever. These are Neodymium Iron Boron and they don't weigh much at all.
Also, if you live in the Houston area and want some of these HD magnets to try, I'll be happy to give you one or two for every car you own. I must have sixty something of them. I'm up here on the north side. Just PM me.
If anybody else wants to arrange and pay the shipping price, I'll be glad to send them wherever. These are Neodymium Iron Boron and they don't weigh much at all.
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Doesn't seem that there would be much oil flow around or across the bottom.
I place them on the inlet side of the filter right in the oil after checking to see that the magnets will not constrict the flow. While they might lose some magnetism from the temperature, they have no difficulty collecting iron particles and never move or fall off.
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