I did not find it in the search or in the Technical Section - but I do remember that when I joined this site there was a thread on a fellow that had installed a really large magnet on the oil filter cover.  The magnet was so strong he could put a wrench up against the oil filter cover and it would stay attached and hang there.

If you want a magnet in your oil system.....it was a good approach.

Dave wrote on 05/01/13 at 10:00:37:




I think Search is busted again ......  
......  just saying, as it couldn't find this in Tech and only found one supemagnet post in RSD, period, and that was a smagnet war.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1197231468

Yes, we are in danger of starting up another schmagnet war.  I am not violently against schmagnets,.. I'm just waiting for some proof they do any good, except for keeping schmagnet vendors wealthy.

Nowhere on the internet are their any studies, tests, SAE journals, etc, that show increased longevity, more power, less wear, or any other kind of benefit from having a magnet in the oil somewhere to attract ferretic particles.  These things are like the gizmos that create turbulence in the intake flow, or fuel ionizers, or smooth out the intake flow.

Yes, they gather a small percentage of the loose particles inside the motor,.. only those particles that happen to get pretty close to the magnet and only those that are iron or the kind of steel that reacts to magnetic force.  All the other particles could care less.  We rely on a good oil filter to trap just about all the loose particles.

One guy in a previous schmagnet thread said the magnet broke off inside the motor.  Apparently the glue gave way.

Even if the schmagnet drain plug doesn't lose the magnet, and even if it does attract some of the ferritic particles, what effect will that have?  If any of you can find some sort of research that shows how a motorcycle motor will last for, say, 10,000 miles longer because of the schmagnet, I'll go out and buy enough to equip all my vehicles.  I'm big on longevity,.. that's why I use Rotella T6 in all my bikes.

Anyway, the point is: A schmagnet drain plug probably won't hurt any (except for being overpriced) but whether or not it results in any benefits is still up for debate.

I don't know that they work either...  I got mine because it was 14mm instead of 17mm... the magnet was just a bonus...
... doesn't Honda or somebody have them stock from the factory?...
I think it was a car... ...

I think they May help in prevention, but, for the most part, I agree. If you see Mr.Magnet has a beard down to his knees instead of just looking like he could stand a shave,, sumpins goin down,,

SALB wrote on 05/01/13 at 12:26:48:


justin_o_guy2 wrote on 05/01/13 at 12:39:57:




A chip detector, eh??!!

They can help this way, but they do nothing to catch aluminum, brass, copper, stainless steel, ceramics, gasket material, clutch material, etc., so as a diagnostic tool they would provide only a limited amount of info.

Besides, if the schmagnet is catching chunks of steel, the owner has WAAYYY more problems than trivial discussions like these.  He's headed for some major disassembly.

gyrobob wrote:
Besides, if the schmagnet is catching chunks of steel, the owner has WAAYYY more problems than trivial discussions like these.  He's headed for some major disassembly.


You just proved my point.  If you're getting more than just fine ferrous paste, it's time to tear down BEFORE it grenades.  I do agree, though, that they're less effective on motorcycles than on older, mostly steel autos.  BTW, if you really want a good picture of what's going on inside your engine, get an oil analysis.