Just curious if anyone has tested for particles in the 4 to 20 micron size for a given oil filter then run it again for the same oil/time with a magnet.
Just curious if anyone has tested for particles in the 4 to 20 micron size for a given oil filter then run it again for the same oil/time with a magnet.
The answer is that it should reduce particle counts.
We have seen images of filters using magnets cut open and there are particles captured.
The question is if it is significant enough to register/matter.
Addition of magnetic filtration is used a lot in industry, and if there weren't any benefits it wouldn't exist.
Feel free to test that and put the magnet POST filter stream and lets see what it captures that the filter didn't.
So, in "general machine wear"- circulating particles are not a primary wear generator
I have seen people go to McMaster and even get 100 lb. magnets ( thinking more is better) and I have seen them on filters, on flow pipes ( even some made stubs out of brass or SS to "do even better" and could be removed for cleaning) and even seen them in sumps or directly under streams ( common in machining applications for coolants)
Pretty much everyone knows that the majority of the sub 10u ferrous particles aren't going to be caught in the average oil filter. So yes, magnets located even after the oil filter will catch ferrous particles.
A very high efficiency oil filter (99+% @ 20u) will catch way more sub 10u particles compared to say a filter at 50% @ 20u.
There are lots of articles out there saying it's the sub 20u particles that do the most "normal" level of wear.
I'm still waiting for someone to show an SAE type study that says cleaner oil doesn't result in less engine wear.
Wear due to parts shedding much larger wear particles due to inadequate lubrication, parts failure, etc (what I'd call an "abnormal wear level") isn't what magnet filtration is focused on
Is it slowing wear, I dont know but it makes me feel better.
I figure the heat got to them and demagnetized them.
Any cast off from camshafts and rocker arms would be very small
and likely not captured by a filter.
Thought of that too … a Gold Plug drain bolt might make more sense being it does not see impingementI have said for ages that magnets have some obvious shortcomings when it comes to auto engines.
High temps cause them to lose their attraction for ferrous debris, and many of the particles are NOT iron. I have always worried if you have a magnet with a chunk of particles attached and you run the engine up hard, will they simply come loose and re-enter the oil flow?
Just like a bigger oil filter, it is a "feel good mod" with little proven benefit except to your worried mind!
Just like a bigger oil filter, it is a "feel good mod" with little proven benefit except to your worried mind!
I have always worried if you have a magnet with a chunk of particles attached and you run the engine up hard, will they simply come loose and re-enter the oil flow?