An SAE report by David R. Staley, General Motors Corp., states: "The smallest particles most popular filters captured with high efficiency are sized 25 to 40-micron, depending on the filter brand...[however] controlling the abrasive contaminants in the range of 2 to 22-micron in the lube oil is necessary for controlling engine wear." It grabs the particles that would normally get caught in the filter, AND the smaller particles your filter can't catch (in the 2-20 micron range). That woulld look more like a smooth black sludge than the particles you see. A filter cutterrer!:bananaman
I seen remote dual oil filters drop the oil pressure 80 psi to 25 psi using a high volume Melling oil pump. You can blame the extra 3 feet of plumbing being the culprit. I would stick with the magnet. And stay away from Fram filters.
I changed the tranny filter and fluid in my Dodge pickup as 100K service the other day and the trans pan had a 2" round x about 1/4 inch tall magnet in it. It had a good covering of ferritic sludge on it. It got me to thinking I need to go rob a couple of those from the bone yard and drop into my C4 pans. Cleaver
Filtermag does make 2 models that stick to the outside bottom of your transmission pan. These work well, and stick on with such incredible force, you need to take precautions when you are putting it on or you could seriously hurt yourself. DM101They also make a 2" x 1-1/4" Neodimium magnet for use inside your rear axle. If you are going to go through the trouble of dropping the transmission pan, I prefer to use this model on the inside of the pan. Its less than $20 and is MUCH stronger than the magnets you might find on a parts car. Probably twice as strong at least for its size. Of course if you can get one of those factory type magnets for free, its kinda hard to beat.
If anyone has access to old computers you can get magnets out of the hard drive units that will crush your fingers they are so powerful. I had two of them stuck together one time and asked someone to pull them apart. They pryed and pulled and grunted and when they finally got them seperated by about an inch, the magnets slammed back together and caught the persons thumb in between and ripped the side off his thumb. The nice thing is most of them have a curved/concaved shape on at least one side so they would stick to the side of a filter pretty easily, and they have a flat side that you could use to stick to the outside of your oil/tranny pan. Computer Hard drive magnets.. They are cheap, and powerful
You are right about that, hard drives use neodymium magnets. The same magnets in Filtermag products. They [hard drive magnets] would be great inside a tranny pan, axle housing, and thats the type of magnet you want to look for if you are in the market for a magnetic drain plug too. Good info Damadman.
My sister left an old relick in my garage, muahahahaha! shhh: As Shultz would say, "I know nuhthink".
Hard drive magnet. It just so happens that I have a near endless supply of hard drives that I can pirate magnets from. I opened a Seagate hard drive from a Dell PC, and layed out the magnet next to a FILTERMAG DM101 for comparison. Here are my observations: 1. Of the two, the larger DM101 is stronger around the edge. 2. Of the two, the hard drive magnet is stronger on the large flat sides 3. If you are not careful while comparing strong magnets, you will inadvertently snap them together on your finger pinching you as bad as you have ever been pinched, causing tremendous pain and a sudden outburst of profanity. Bottom line is these hard drive magnets are definitely worth grabbing. They are quite strong, I would guess the total magnetism is at least as much as the DM101. Definitely worth while throwing into a transmission or rear end. However there is no practical way to use this magnet on an oil filter. Again, thank DaMadman for this useful info.
Brand new 5,266 cubic inch twin turbo V20 Caterpillar G3520C Genset. - RA450 Filtermags. [I AM smiling.] Same filter cut open at 1000 hours.
Wow, that's pretty cool!! I've done the hard drive thing, since I never toss out a computer with one intact.
