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Curious if anyone uses a filter mag on their oil filter or transmission pan? I have a '15 C7 Z06/Z07 M7. I'll be changing oil and transmission fluid here soon. The oil filter looks to be in a tight space and I'm not sure if a filter mag would even fit.
I got some Neodymium Disc Magnets from Bezos for another project and I had four left over. I put them on the outside of the oil filter. They carry a large selection of sizes and they are really, really strong. They never have moved, or fallen off. Don't know if it helps anything, as I never dissected an old oil filter. But it was free for me.
I replaced the oil plugs with a magnetic ones and I do see a extremely fine bit of stuff on them when I remove them. Nothing abnormal. So magnets do work.
If you have an old failed hard drive lying around, disassemble it and remove the magnets for use on the filter. You may need to do some grinding or cutting to get them the right shape. I have a small collection of them I've been saving for a future project like this, but be advised that they are very strong, so be sure to remove your mechanical watch before handling them! Info on using magnets on an oil filter are inconclusive, IMO, but I can't see how it could hurt. See one positive reference here.
If you have an old failed hard drive lying around, disassemble it and remove the magnets for use on the filter. You may need to do some grinding to get them the right shape. They are very strong, and be sure to remove your mechanical watch before handling them! I haven't tried this but it should work very well, and I may do it for my upcoming oil change.
This is EXACTLY what I do, on all of our vehicles. Works great!
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I have not used any magnets on my filters but I can't think adding them would do any harm. Would be interesting to see if there would be any metal particles caught by the magnets.
Lifter, cam, rocker needle bearings, the high pressure fuel pump lifter, timing chain and gears, oil pump internals comes to mind as the steel parts off the top of my head.
This is EXACTLY what I do, on all of our vehicles. Works great!
Do you tape the magnets to the filter or do they hold on their own? Since they're neodymium they will rust, but should be plated. Have you noticed any rust? Also, how many HD magnets do you attach?
Thinking of how the filter works: magnets on the outside of an oil filter collect metal debris before it passes onto the filter. So this makes the filter last longer?
I have one just like it on my 2019 GS and replaced both drain plugs with them as well. A tight fit. On older 60 vette had one that was made up of tube like ones. It fell off one day. The one above has not moved or even come close to falling off.
Do you tape the magnets to the filter or do they hold on their own? Since they're neodymium they will rust, but should be plated. Have you noticed any rust? Also, how many HD magnets do you attach?
No tape - the magnets stay on by themselves. I've never had any rust issues. In fairness, my fun cars don't see inclement weather. My Tacoma, however, does. I haven't noted any rusting on any of the magnets. I simple attach the semi-circular magnets to the filter.
Originally Posted by DontCallMeRadio
Thinking of how the filter works: magnets on the outside of an oil filter collect metal debris before it passes onto the filter. So this makes the filter last longer?
I can't speak for others, but my use of magnets is for nothing more than stripping ferrous particles from the oil. I still change oil and filters on/ahead of schedule.
Last edited by NortonCO; Dec 21, 2021 at 11:49 PM.
I have not used any magnets on my filters but I can't think adding them would do any harm. Would be interesting to see if there would be any metal particles caught by the magnets.
It definitely has been proven to be effective and are largely used on industrial applications. Magnets are useful for extending engine life by preventing metal shavings from re-enteringthe cylinders. For most, they won't keep a car long enough to make a difference. But I'm planning to keep this car which is why I'm looking to add magnets to my filter.
I have one just like it on my 2019 GS and replaced both drain plugs with them as well. A tight fit. On older 60 vette had one that was made up of tube like ones. It fell off one day. The one above has not moved or even come close to falling off.
Which magnetic drain plugs did you go with? I'm looking to do the same to my 2019 GS and 2019 Stingray.
Thanks. Rich
I can not remember which drain plugs I went with. But I did not over think it , because oil filter was quite a bit bigger and a lot stronger than the two put together. I had dealer give me the free oil change. I checked with an old mirror to see if they put the magnet back on when I got home. It was on there, no problem. As long as you get the right size diameter, for the curve it fits good. You may have to slide it off when you remove the filter. I do not have anything to do a clean cut of the filter. But I would expect it to have a slight paste of grey metal. Even the rear axel has a magnetic one from the factory. When changing that oil. I was surprised how clean it was and how little paste on that magnet.
No tape - the magnets stay on by themselves. I've never had any rust issues. In fairness, my fun cars don't see inclement weather. My Tacoma, however, does. I haven't noted any rusting on any of the magnets. I attach to semi-circular magnets to the filter.
I can't speak for others, but my use of magnets is for nothing more than stripping ferrous particles from the oil. I still change oil and filters on/ahead of schedule.
I can chime in here and say that they 100% work. On a previous motor build I used neo magnets on the oil filter. 6 of them, evenly spaced out around the filter. As I broke the motor in, I cut each filter open. Sure enough the first filter, that was ran with break in oil, had perfect imprints of fine metal particles right where the magnets were. I continued to do this until very little metal was present, the same amount on every oil change. I stopped cutting open filters at that point. Like others have said, can't hurt to help the filter do its job, especially during break in.
Does anyone use a filter mag?
This is EXACTLY what I do, on all of our vehicles. Works great!
