Well after I changed my tranny filter today, I decided to cut the old one open to see how effective or necessary it really was. This was the first tranny filter installed on my car at 31K along with a tranny cooler and tranny fluid change. It was placed after the cooler but right before the oil goes back into the tranny. Now my car has 58,800 miles. Here are pics of inside the filter after about 28K miles.
The Magnefine filter consists of 3 parts:
I actually didn't know it had another paper filter element other than the advertised magnetic filter. Was it brown when it was new? (Note that the black chunks on top are just plastic shavings from me cutting the filter).
And now the good stuff... The top part of the filter is magnetized. As you can see, it has attracted a lot of metal shavings from the tranny fluid. (Again note the large chunks of black you see are just the plastic shavings from me cutting through the filter). Look at all the fine metal shavings stuck to the magnets!
Well, there you have it folks! I guess it really wouldn't hurt to have a tranny filter. Otherwise all that junk would be going right back into your tranny! Magnefine claims you should change the first filter at 15K miles, and then every 30K miles thereafter. However, seeing at how this filter looked at 28K miles, I think it could have gone a little longer. Magnefine claims that these filters have a safety by-pass feature which allows fluid to "by-pass" the filter just incase it becomes clogged. So there's nothing to worry about.
After opening this filter up, I like the Magnefine filters even more. Not only do you get the paper element filtration of the Perma-Cool filters, but you also get the extra magnetic filtration that finely separates metal shavings in the tranny fluid. The filter is designed so the tranny fluid goes through the magnetic filtration first, then through the paper filter element.
The Magnefine filter consists of 3 parts:

I actually didn't know it had another paper filter element other than the advertised magnetic filter. Was it brown when it was new? (Note that the black chunks on top are just plastic shavings from me cutting the filter).

And now the good stuff... The top part of the filter is magnetized. As you can see, it has attracted a lot of metal shavings from the tranny fluid. (Again note the large chunks of black you see are just the plastic shavings from me cutting through the filter). Look at all the fine metal shavings stuck to the magnets!




Well, there you have it folks! I guess it really wouldn't hurt to have a tranny filter. Otherwise all that junk would be going right back into your tranny! Magnefine claims you should change the first filter at 15K miles, and then every 30K miles thereafter. However, seeing at how this filter looked at 28K miles, I think it could have gone a little longer. Magnefine claims that these filters have a safety by-pass feature which allows fluid to "by-pass" the filter just incase it becomes clogged. So there's nothing to worry about.
After opening this filter up, I like the Magnefine filters even more. Not only do you get the paper element filtration of the Perma-Cool filters, but you also get the extra magnetic filtration that finely separates metal shavings in the tranny fluid. The filter is designed so the tranny fluid goes through the magnetic filtration first, then through the paper filter element.