How strong a magnet should I ducttape to the oil filter?

[Polygon]

All I can add is to put a rare earth magnet on your oil pan.

[KiwiBacon]

Originally Posted by Polygon

All I can add is to put a rare earth magnet on your oil pan.

best in a place that's easily accessible. Like on your sump plug.
Could be why most manufacturers do that already.

[j cAT]

Originally Posted by PistonPower

in the average engine the oil is sucked up from the sump by the oil pump. the pump then pushes the oil through the filter. once the oil is filterd it is ready to lubricate the mooving engine parts, it travels through the crankshaft and all its bearings and the balance shafts then goes up to the head. after lubricating the camshafts it then comes back down to the sump. on its way it might collect small bits of mettal from wearing parts so the best place to have the magnet is in the sump. it is placed there so all the bigger shards of mettal can be collected before the oil travels back through the oil pump where it might do some damage. the sump magnet is not verry big though so its magnetic field will only attract the biggest shards of mettal, the rest has to get filterd out by the filter, but they are so small that they will not cause any damage to the pump. the oil is then "clean" agan and ready to do its job.
its not that hard to do a oil and filter change, check your dipstick, if the oil is dirty its time for a change, your engin will also last alot longer and its not that expensive.

as uncle bob says magnets are only good to diagnose your engine coming apart....with metal on a magnet you have severe problems....


the real danger to engines wearing out is carbon....carbon is very hard and abrasive....carbon is black...when the oil gets dark,,, time to change oil...mileage means little....color is most important..

[esnap]

Here is the deal on magnets: They work!
Putting magnets in or outside of your oil pan is great.
Mag tipped plug Super!
Putting one or more on your filter is fantastic!

Magnets will pull ferrous particles out of your oil and keep them away from you wearing surfaces.
The only thing you want swimming in suspension is carbon which is colloidal and that is why they put detergents in the oil so it comes out when you change it.

Mags will not of course attract dirt/sand or aluminum but aluminium actually has inherent lubricity and using a good paper filter on you intake is the best prevention for grit. I would rater use a new paper air filter at regular intervals than a K&N.

Never ever and I mean ever use Fram oil filters they are the worst, in fact the Walmart ST oil filters are way better and they still suck.
Use Pure one or Mobile 1 filters.

You probably have some old hard drives laying around, there is a super neo magnet inside that you can use in or on your oil pan and stick a couple on you filter.

[edwinn]

I've been skeptical about magnets on the outside of oil filters, and would have to look at a model of the flux lines. First though is the filter (the can wall) would be a shield. And where are the metal particles supposed to collect anyway? on the inside of the filter wall? on the entire inside surface? or through the wall from the magnet? Also at what rate and pressure does oil flow through the filter?

Naah.. I'm still skeptical. See if you can find, or have an engineer model and generate the flux lines on a PC.


-Ed

[j cAT]

Originally Posted by edwinn

I've been skeptical about magnets on the outside of oil filters, and would have to look at a model of the flux lines. First though is the filter (the can wall) would be a shield. And where are the metal particles supposed to collect anyway? on the inside of the filter wall? on the entire inside surface? or through the wall from the magnet? Also at what rate and pressure does oil flow through the filter?

Naah.. I'm still skeptical. See if you can find, or have an engineer model and generate the flux lines on a PC.


-Ed

steel and other magnetic materials will collect on the magnetic surfaces. using the drain plug with the magnet is now quite common.

using a hose clamp and securing a magnet to the outer shell of the oil filter will also collect magnetic debris.

oil flow is from the outer shell threw the filter media to the center screw on pipe.
cut open your filter and determine the quality of materials and fabrication. wix/pure one purolator are high quality as are some others.

[RidingOnRailz]

Originally Posted by sad-lumina-owner

apparently a magnet on the oil filter grabs all the bits of metal floating in the oil.

I was thinking

(1) I'd like to try this for a few oil changes.

(2) I'd like to open an oil filter and see if it worked.

(3) I'd like to do it for free/cheap, and not have to buy some overpriced kit.

________________

About this size...

[j cAT]

get a magnet from a audio speaker.

magnetic particles are just one item floating in the oil. other non magnetic items are in need of filtering. this is where the filter quality comes in. poorly made filters pass large objects. these then wear out the internal engine components.


a major way particles enter the engine is the air intake. this must have proper sealing and air filters kept in good condition.

then you have the crankcase venting system which need be checked for hoses and pcv to be working correctly with hoses/.gaskets in good condition.

[danielsatur]

A good oil filter + synthetic oil is probably good enough, check your oil weekly for any shortage.

Save the duck tape for any leaks!

[edwinn]

Originally Posted by danielsatur

A good oil filter + synthetic oil is probably good enough, check your oil weekly for any shortage. Save the duck tape for any leaks!

What are good oil filters? I typically buy Delco filters.

Have Delco oil filter on the engine now, however bought a Fram air filter last go-round.


-Ed

[j cAT]

wix and pure one purolator are what I use now. years ago I used only ac delco when they where made here. now they are " IMO " junk.

cut them open and inspect , see whats going on in there ! then you will be an expert in oil filters.

[edwinn]

Originally Posted by j cAT

wix and pure one purolator are what I use now. years ago I used only ac delco when they where made here. now they are " IMO " junk. cut them open and inspect , see whats going on in there ! then you will be an expert in oil filters.

Found out that NAPA oil filters are made by Wix, or Affinia.

http://www.affiniagroup.com/wps/port...roup/products/


So I bought a Wix/NAPA filter to replace the ACDelco PF47. It was 6-1/2 bucks.


-Ed

[shadows]

Originally Posted by sad-lumina-owner

apparently a magnet on the oil filter grabs all the bits of metal floating in the oil.

I was thinking

(1) I'd like to try this for a few oil changes.

(2) I'd like to open an oil filter and see if it worked.

(3) I'd like to do it for free/cheap, and not have to buy some overpriced kit.

in a good condition engine- you'd be wasting your time and your brain waves
you wouldn't know what you expect to find by cutting open your oil filter- there would be more metal from cutting than you would ever find from a magnet on the outside of the filter

do you actually understand a running engine and the oil flow-

for all you who aren't experienced engine/ transmission builders- but internet lopers- those magnets are there to catch particles after the engine/transmition has been shut down- metal particles in the fluid settle to the bottom- magnet will grab "some"-

there is not one documented case where a running engine/transmition that has a magnet somewhere- will catch and hold metal particles- in the high presure flow- flopw stops- there are cases where a magnet helps to catch and hold magnetic particles

you are falling for one of the biggest scams-

you can do the test yourself
get the engine/transmation fluid up to operating temperature- you can cook either in a frying pan- add some magnetic particles
get a magnet- attach it to a pan- pour the real hot fluid into the pan- turn your high pressure water hose on and dirrect it right at the magnet-

in case your brain isn't working- and you can't understand real life facts- your water hose is most likely up to or past what your system produces --
right- you of course have a way to measure

I've got a bridge that completly goes over the river here in SW Kansas that I'll sell you-

the magnets in the oil and transmition pan are there to catch the magnet particles as the heavier particles settle top the bottom- once the flow under pressure has stopped-

filters- you couldn't prove beyond a guessed notion/belief that any filter/or any supposedly better means of filtering is any better than a factory filter- plain and simple- you believe otherwise- you are living in a world of your own making

[danielsatur]

How about a magnetic drain plug + clean during oil change.

[j cAT]

I am surprised at your attitude concerning this question about using a magnet for the capture of magnetic particles in the engine oil system.

magnets are used in todays vehicles on the drain plugs, inside the transmission and on the diff drain plugs as well as the rear diff cover.

these magnets are a problem for the pro's that do service these type equipt vehicles as many just throw away the tranny magnets and also never clean any glued on as this cuts into the profit margin.

I have used magnets over many years. I have captured much magnetic material by doing so. also I have removed many tranny's and diff covers to find much magnetic material on these internal magnets.

back in the late 1980's I got a large magnet from a powerful speaker. mounted in on the exterior of transmission pan exactly where the sump pickup is located. when dropping the pan 30,ooomi later material was sure enough on the magnetic portion of the pan in the same shape as the external magnet. also in OEM magnet had also some material. the vehicle was a 1983 chevrolet 350 tranny. at that time the mileage was 60,ooomi. In the year 2000 I sold this vehicle with 380,ooomi on it . the engine and transmission all original with no internal parts repaired/replaced. magnets do help.

I never did test out the oil filter mounted magnet. one this that I have found over 4 decades of working on these vehicles is the first year creates the most particles. after that around 100,ooomi this drops off to very little . BUT THATS WITH PROPER CARE AND USING HIGH QUALITY FILTERS.

NOT CHINESE MADE CRAP BY CHILDREN !

Like I stated before I cut them open , thats the only way to determine how good they are made and the filter media quality.

I'm now on my 4th vehicle since getting my first one back in 1967. what/how I maintain these vehicles does not go unnoticed. I expect 200.000mi.or 15-20years.