Magnetic Drain Sump Oil Plug

[VR6Pete 1,455]

Was going to stick a new sump oil plugin my Corrado... seen this on ebay:

http://stores.shop.ebay.co.uk/Motorsport-Developments_Magnetic-Sump-Plugs_W0QQ_fsubZ1635529018QQ_sidZ462942988QQ_trksidZp4634Q2ec0Q2em322

A little cheap I thought? I assume they are just alloy and not steel etc.... has anyone used anything like this or similar? Dont want the magnet coming off and rattling around my engine or something!!

Opinions please

Pete

[bungy 2]

Alot better to use the magnetic strap around your oil filter. Holds any particles inside your filter and strap is transferable between filters.

[legvw 0]

I use a magnetic drain plug, going to do a service soon so i'l see if its picked anything up! :-)

[Scott 0]

mate, buy a couple of 20-25mm neodymium disc or square magnets off the bay for about £4 and stick one to the outside end of your steel drain plug head, and one on the oil filter casing, they will never fall off, and the plain steel is transformed into a powerful magnet thru magnetic induction.

Incidentaly, a proper neo magnet is so strong it will retain even alloy / aluminium particles / filings, because of a phenomenon called "eddy current braking" - wiki it if u like, alum and copper are not magneticly attractable but a moving magnet or piece of alloy cannot pass each other due to opposite fields being created and the alloy wont leave the magnet area again, it will fall off slowly after u take the drain plug out, wont stick to it like steel filings, but wont circulate in the oil anymore either. The magnetic field causes eddy currents to flow inside the alum filings since they are moving on approach to the neo mag, and the eddy currents generate an opposite field in the filing, so it is attracted to the mag and settles, and movement of oil would make it not want to leave -

try dropping a neo magnet down a copper or aluminum pipe, it falls in slow motion!

Its the coolest thing ever lol, and those magnetic sump plugs are a bloody rip off! £35!!! sheesh the mags are worth like £2 ffs lol

I am an engineer bud, and I would never ever put a sump plug in wi a neo on the inside, god the spinning crank is a big lump of yummy steel to the neo magnet, it will want to get to it all the time, and if it gets away, it will shatter on impact wi the crank and cover the crank webs in millions of little shards of gritty crap - not good, probly foam the oil round the spinning webs because of turbulence from the "rough" surface they would create, and they would stay there - difficult to remove!.

Neos are the strongest magnets known to man, I have a 1" neo cube that can hold my bodyweight off the ground with ease if stuck to a steel bar, and they LOVE steel lol! Will take your fingers off when they grab onto it, check out some neo magic on youtube to see more...

[bungy 2]

Nice information there. I don't like the sump plugs either. At work we used mag chip detectors on gas turbines (jet engines) but they are always on the scavenge side.