Thread: OiL Filter Magnet

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I am looking for the one that goes all the way around the oil filter. I have seen the drop in type (too hard to get out) the speaker magnet type and several others. Even HD has them now. This one is a little pricy. Any thoughts or opinions? I did seach FAQ

magnatism has to pass thru the body, I doubt it will work as well as drop in type. your throwing the old filter away, just cut the filter in half and retrive it. personally, I'd put a magnent in the oil pan and put a filter screen on the filter enterance.

I see what you mean, thank you.

Magnetic drain plugs work well too.

Originally Posted by viking

Magnetic drain plugs work well too.

forgot about those. inexpensive too.

Mopar PS pump comes with 1 inside. Little bigger than a quarter and twice as thick. Strong little sucker that would be good in the oiL pan. Found these drop ins tonite on E..., $ 10 for 9 mags.
*update 10.12.06 * Got these in the mail today. They measure 3/8" x 3/8" x 1-1/4". Waiting for a oil pump rebuild kit to drop the oil pan, then I will JB weld one in the pan and drop one in the filter. Claims to remove 99.1% of the micro fine metal particles.

They look good, I like the internal ones. As I have allways wondered with the external ones that. They sort off do their job. I hav e seen that they just rely on thier magnetism to stay attached to the filter. My question is what happens if you hit a big solid bump or a pothole, the magnet falls off and a whole lot of filings are suddenly released into the oil flow ????

That would be the worst case scenario. Also I read that rare earth mags loose their strength above 180 degrees. Anyway, I ordered the 9 pack and I plan on changing my filter after 300 miles (new valve job) so I'll do a visual and keep you posted.

So if the magnet comes out hairy ! then you know it has done it's job.

Originally Posted by Matt167

magnatism has to pass thru the body, I doubt it will work as well as drop in type. your throwing the old filter away, just cut the filter in half and retrive it. personally, I'd put a magnent in the oil pan and put a filter screen on the filter enterance.

I stuffed one in between the lid and screen, then made these bends to hold it captive in case the magnet looses it's pull.

Here's a thought. Why are we concerned about a magnet being placed into a system that has non-magnetic particles floating around. Please understand my line of thought here. If it's magnetic, your engine is trashed. Either your machine shop was lazy on a Friday afternoon or there are peices letting go inside your motor that a magnet can not stop the carnage. Think about this for a sec......if any magnet you place in the system has a science project attached to it, do you feel the miracle of the magnet is going to stop the demise that this engine is under? Bearing peices are not going to be picked up or stopped, they have no qualities to follow this line of thinking. If the science project exists, you're problem lies elsewhere and faith healers and superstitions will not help. There is a major concern for the life of the thing at that point. If there is by chance a small deposit on the magnet, I would be gravely concerned about my machine shop or my skill in assembly and geometry setup and I know I'm going to eat this motor, sooner or later, but I'm gonna have to eat it. I would like to hear from all here on the forum and see what the opinion is concerning snake oils and gadgets sold to make money when the concern during the build of the project should have been the objective. I'm venting and ranting, sure. I have more faith and experience in my builds and projects to not worry or want my clients to worry about installing something that doesn't save the engine but rather made a small fortune on selling the thing to a paranoic market.

timing gear failure, mis-matched aftermarket parts.

If there are filings in the engine, the pump is the first thing they pass through on the way back to lubing the engine. I don't see a magnet catching every particle in the oil as it passes by it. Oil is designed to suspend particles and the oil is moving past the magnet fairly fast. Best way to remove the particles is a tear down. IMHO.

I see what you mean. Thanks for the solid.

I can see some value in a magnet on a fresh rebuild, to catch the fine stuff caused by the breaking-in process.