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post #1 of 11 Old 11-26-2013, 10:49 PM Thread Starter
94jeepman
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filter magnet

I was on summitracing.com and I saw this filter magnet. http://www.summitracing.com/parts/ft...view/make/jeep
My guys is it sticks on to the filter and magnetize it to keep metal from going back into the motor. Any body else know what it actually does?

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post #2 of 11 Old 11-26-2013, 11:00 PM
JRLT
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Basically, that's all they are supposed to do. There are cheaper ones out there.

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post #3 of 11 Old 11-26-2013, 11:09 PM
colinzj
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Separates you from $54.

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post #4 of 11 Old 11-27-2013, 03:02 AM
atarijedi
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Quote:
Originally Posted by 94jeepman View Post
I was on summitracing.com and I saw this filter magnet. http://www.summitracing.com/parts/ft...view/make/jeep
My guys is it sticks on to the filter and magnetize it to keep metal from going back into the motor. Any body else know what it actually does?
It collects metallic particles that are ferromagnetic, like steel. That is all it does.

Not really worth it though. This guy made his own version using strong NeFdB magnets, and after 8000km it didn't seem to catch much.
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post #5 of 11 Old 11-27-2013, 07:29 AM
fishinbama
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The best place to get disposable neodymium magnets is out of old hard drives. Take them apart and you will find a very strong magnet.

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post #6 of 11 Old 11-27-2013, 08:02 AM
james_2k
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+1

i took apart a hard drive and got myself 4 strong magnets which i put on the oil pans of my cars, around the drain plug (2 each)
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post #7 of 11 Old 11-27-2013, 10:29 AM
imnotted
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If you're worried about a significant amount of metal in your engine oil, you may have far greater problems that a magnet won't solve. I don't use magnets on my engines; a little bit of benign metal isn't going to hurt. If it is big enough to damage my engine, then it probably came from a spun bearing, in which case I'm looking at a rebuild anyway. I've been told by a master ASE mechanic friend of mine that they're kind of pointless on auto transmissions, too. He seems to believe leaving that metal in the system actually helps the clutch packs engage and slows down their wear. I'm not sure I agree with that, and I still drain and clean my magnet on a fluid change (though I do follow my own, extended change interval). But the theory is there, so take it for what it's worth. I look at Sprinter vans, which use the same NAG1 as my CRD (basically a 722.6/W5A580), and I know they're not getting changed as often as they should; they still manage to go about 200k miles between rebuilds. It's a finicky transmission when it comes to fluid levels, but it's far more resilient than people give it credit. I've seen them go 100k miles between changes without extra magnets and without issues (see: every MB that shipped with a 722.6 that Mercedes said was "filled for life").

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post #8 of 11 Old 11-27-2013, 03:13 PM Thread Starter
94jeepman
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Quote:
Originally Posted by imnotted View Post
If you're worried about a significant amount of metal in your engine oil, you may have far greater problems that a magnet won't solve. I don't use magnets on my engines; a little bit of benign metal isn't going to hurt. If it is big enough to damage my engine, then it probably came from a spun bearing, in which case I'm looking at a rebuild anyway. I've been told by a master ASE mechanic friend of mine that they're kind of pointless on auto transmissions, too. He seems to believe leaving that metal in the system actually helps the clutch packs engage and slows down their wear. I'm not sure I agree with that, and I still drain and clean my magnet on a fluid change (though I do follow my own, extended change interval). But the theory is there, so take it for what it's worth. I look at Sprinter vans, which use the same NAG1 as my CRD (basically a 722.6/W5A580), and I know they're not getting changed as often as they should; they still manage to go about 200k miles between rebuilds. It's a finicky transmission when it comes to fluid levels, but it's far more resilient than people give it credit. I've seen them go 100k miles between changes without extra magnets and without issues (see: every MB that shipped with a 722.6 that Mercedes said was "filled for life").
I was just curious what it did never saw one before
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post #9 of 11 Old 11-27-2013, 04:25 PM
suzieque
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Quote:
Originally Posted by atarijedi View Post
It collects metallic particles that are ferromagnetic, like steel. That is all it does.

Not really worth it though. This guy made his own version using strong NeFdB magnets, and after 8000km it didn't seem to catch much.
cool vid. I bought a magnet off of ebay, I've never cut a filter open to see what it catches. Seemed like simple insurance to me.

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post #10 of 11 Old 11-28-2013, 10:57 PM
fishinbama
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Magnetic oil drain plugs are stock on some vehicles and are included in many differentials as well as most transmissions. There must be some benefit for a cost-cutting manufacturer to spend the extra dimes.

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post #11 of 11 Old 11-29-2013, 05:08 AM
tjkj2002
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Quote:
Originally Posted by fishinbama View Post
Magnetic oil drain plugs are stock on some vehicles and are included in many differentials as well as most transmissions. There must be some benefit for a cost-cutting manufacturer to spend the extra dimes.
Never seen one on a auto trans but are pretty standard on manual trans.If you notice diffs and manual trans do not have oil filters,hence the magnet of the drain plug.

'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
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