Both susceptible to what? Filters aren't going to clogged from the ferrous debris because most won't catch a lot of it. If a magnet is used, then that makes the loading on the filter even a bit less. Besides, oil filters tested per ISO 4548-12 get loaded with some pretty small particles in the ISO test dust used in the test, so that factors in to how they perform in terms of efficiency and holding capacity across a broad range of particulate sizes.
I got my pair of Filter Magnets installed today.
- Thread starter Carlostrece
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Carlostrece
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The Filtermag is a prefilter. So very little metal will reach the filter media. How much difference that will make to filter life, I don't know. Probably not a lot because most particles are non ferrous, but it would help the filter last slightly longer, IMO.
My preferred way to increase filter life is to use a longer filter (if a compatible one is available). For my Buick, a compatible longer filter is available.
And it become less efficient. ISO 4548-12 data proves that. Go read the big Ascent thread starting around page 12 if you haven't seen it.
A magnet is going to have caught a lot of debris for it to reach that point. If it reaches that point there is a lot wrong going on in the system to shed that much ferrous material. Again, even it it loaded up so much that it became ineffective, then it caught as much as it could which is way more than if it was never there.
I was responding to the question of, "If the magnet helps the filter isn’t that good?"
Carlostrece
$100 Site Donor 2025
Agreed. That's what I was referring to earlier.
That's true for magnets in general, especially weak magnets, but Filtermag is orders of magnitude more powerful and larger than any drain plug magnet.
There will never be enough metal in an OCI to overwhelm 1 Filtermag, and I have 2 Filtermags on my oil filter, and I have an extra long oil filter too.
I read that as the magnet is helping the filter in terms of providing better overall filtration to the oil ... not helping the filter last/go longer. Magnets are mainly used to help clean the oil better, not make the oil filter last a bit longer. Most filters are changed out way before they are near fully loaded anyway.
Hopefully he can test and we can find out if there is some impact.
That's the benefit he provided studies for.
Olds394 has only make one post (#68) in this thread, and he didn't mention or link any study.
I'm referring to the video I posted regarding filter magnets.
That wasn't from Olds394 as you claimed referencing his statement of "If the magnet helps the filter isn’t that good?" in post 68. This is getting all twisted and convoluted. And besides, that study is nonsense wrt ICE engines. it might be a valid subject matter in certain industrial filtration systems, etc where very large amounts of ferrous debris in the fluid exists that would actually impact the life of the filter in a meaningful way. Not happening in an ICE oil filter. Magnets in ICE oiling system are there to remove ferrous debris that can add to engine wear over the long run, not to enable the oil filter to be ran longer.
Carlostrece
$100 Site Donor 2025
I agree mostly, but it might help the filter last slightly longer because Filtermag is a prefilter for ferrous metal particles.
Not enough on an ICE to make anyone say: "Hey, I'm going to run the OCI and oil filter a lot longer now since I have a Filter Mag". Filters without a Filter Mag aren't going to go over the edge because of the ferrous particulate that's say 7u and smaller that it has a harder time catching in the first place.
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