Best magnetic drain plug?
 

My friend just got a brz and was wondering which magnetic drain plug to buy. He's thinking of getting this simple brand one or a greddy magnetic drain plug. The greddy one is half the price of the dimple one. What makes it worth twice the amount of the greddy one. For 35 you can buy a filter mag, which I was thinking of getting instead.

But after watching dimplemag video in another thread I now can't decide what to get, as people said a oil filter magnet wouldn't be as good as a drain plug one since you want to catch all the shavings n magnetic particles before it gets to the engine.

http://www.rallysportdirect.com/Dimp...g&src=2pflth5d

Or

http://www.rallysportdirect.com/shop...STkxoCHmrw_wcB

Or should I spend like 5-10 bucks more on a filter mag

I actually have the Greddy Magnetic Drain Plug, and I honestly have nothing to complain about. It works as advertised, and pulled a lot of sh!t that I didn't know was in my engine. I don't quite remember the price, but I do remember that for the price it was a good deal for the quality I got.

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You do realize that if there's metal particles, they don't just drop to the bottom of the engine like it was a tank of water... more often than not, it is suspended in the oil.

Ultimately you need to decide why you need a magnetic element and what you are trying to accomplish. Filter Mag can be reused across multiple cars as long as the filter is of a similar diameter.

-alex

I have the greddy magnetic drain plug and it picks up some stuff. It's not the be-all-end-all cure. So it's up to you. I don't think it was truly necessary.

I was torn between a magnetic plug or the quick valve. I chose the quick valve for the less messy and quicker oil changes. I figured that as long as the oil filter does its job, then there will be no problems. and I also change out my filter every oil change, even though some people say that it's not needed.

You can pick up some really strong magnets on amazon, just stick 1 to the oil pan. After about 5 oil changes stick an additional one on. After about 100k miles, drop the pan and service the oil pan gasket. Remove the metal shavings and remove all but one magnet. It worked like a charm on my last car.

Or you can just buy one little magnet and put it on the end of your drain plug for less than $5.

I use Dimple Magnetic drain plug instead of Greddy's because the Dimple one is made by steel. I dont see any necessary to use aluminum drain plug. To save tiny weight? or because race car? Aluminum is softer than steel for sure. I dont want to mess up my drain plug bolt.

It worked well and did catch up some dirty stuff every time when I did the oil change.

I don't use the Filtermag for the same reason that I do not use any aftermarket filter. I think there is a concept called "flow rate"?

Would you care to elaborate on that statement?

I am not sure, so I use a "?" Or I think it is the bypass valve pressure that might be affected. Iv heard that oem subaru oil filter is the best because it have a bypass valve pressure that "match“ this car. And Filtermag might affect this. Aftermarket filter use lower bypass valve pressure so it allow more oil flow through the filter. I mean aftermarket filters have higher flow rate.

This guy might be able to explain why oem filter is the best.

And here is what I just found:

I happened upon a pretty convinving argument that putting a filter mag on the exterior is not only "not" useful and not as effective as "dropping IN a magnet"... it also can be harmfull........

QUOTE >>>> LINK TO CLAIMS

Let's take a look at a cut open oil filter
wrapped in an external Filter Magnet type product.

Where is all the metal deposited?

You are being tricked they show the larger metal particles that have not reached the oil filter element yet. Remember that if you can see metal it is larger than 50 microns, so all of these loose chips of metal would have been caught by the paper media.

Truth is you should never collect metal before it passes into and through the media. What you want to collect with a magnet is any particles that are so small, they go through the media. The ones that are 5, 10 or 15 microns, the ones the SAE documents below say are responsible for 80% of your engines wear.

A more important issue is engineering! These products are in direct conflict with the design an OE Filter company builds into their products.

Note above that oil flows from the outside to the inside of filter but also note the space between walls and media paper, it is extremely tight and narrow.

Now note where the ragged, rough large metal particles are deposited. They all end up in nice little rows along the inner wall of the filter's metal shell. Well those walls are factory finished with high tech paint like coatings that seal and smooth the raw steel so it is virtually a zero friction component.

FACT: The faster and easier the oil flows up the side wall and then into the paper media, the less Horse Power (ie Gasoline) it takes to pump the oil.

The last thing you or the filter manufacturer wants is a rough surface on the inside of that can, it just does not make good sense on any level. Let the filter do it job of removing larger particles and then let our Ceramic Oil Filter Magnets clean up what the spin-on unit misses... it's a winning combo!

END QUOTE

http://www.bobistheoilguy.com/forums..._NOT_a_good_id

This is an outright fabrication. An oil sludge can consist of particles less than 50 microns.

Any argument against the FilterMag was immediately dismissed by this statement.
It is one product's claim against another. There is no evidence to support the claims just "our product is better".

If you had read the entire thread you would have seen further refutation.

I am not claiming the FilterMag to be objectively beneficial but I like the concept.



.

You inspired me. I keep a stash of old hard drive magnets. Now I have one less.

http://i.imgur.com/OK2Pxyol.jpg