| Re: Opinions Wanted on Transmission Filter [message #366071 is a reply to message #362702] |
Wed, 11 August 2021 12:06   |
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Messages: 348
Registered: August 2015
Location: DFW
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JohnL455 wrote on Sun, 07 March 2021 19:50Since installing that means rubber hoses, I say no. Fail points.
The stuff that settles out in the pan is just that, out of circulation.
I would just change the fluid slightly more often and be ahead of the game.
JohnL,
Thanks very much for this piece of advice... I'm not a fan of rubber lines either, so I ended up going with this version of the magnefine filter that has AN fittings:
https://www.magnefinefilters.com/Magnefine-Performance-Edition-Transmission-Power-Steering-Filter-P038M.htm
Found one on Ebay for around a hundred bucks, so not too bad for what it is... The filter design is very nice and the housing is heavily built billet aluminum. There is a bypass in the center of the filter immediatly below the inlet. The bypass is also in the center of a donut shaped magnet. Under normal operation with the bypass closed, the fluid is forced to the outside of the filter. The donut magnet is about an eight inch smaller than the outside housing, so the fluid flows though that gap, bringing it near the magnet, and from there flowing outside to inside through the filter material. I very much like the idea of the additional "scrubbing" of the fluid to remove contaminents this filter provides in addition to the stock filter... And being able to check on and change the filter element without dropping the pan, and easily seeing what is collected is a nice bonus. And there's always the bypass (which still passes the fluid near the magnet via the donut hole in the center) in the event of catastrophic failure plugging the filter to keep fluid flowing, not to mention the stock filter is still in the pan.
I guess I did not mention this above, but a lot of the reason I did this is with the AC Delco trans filter no longer available, the only stock filters I've been able to find don't appear to be the most well made... I tore into one of the available stock trans filters, and the corregated paper filter element was not confidence inspiring... The metal edges were also rough, and I even pulled a splinter of metal off the inlet where it appeared to have been cut with a dull cutter... The glue used to seal the filter housing also was uneven on the one I pulled apart, and you could see some spots without glue where fluid could bypass the filter.
The magenfine filter OTOH has been tested and used by Ford and I think Nissan as required on transmission replacements in order to get the factory warranty, (To filter out contaminants left from a previous trans failure) and there are published tests (from Ford I believe) you can see where multiple filters were tested for filtration, resistance to flow, and reliable triggering of the bypass. These tests were done on the normal hose barb filter, not the fancy billet filter I went with, but both supposedly use the same filter design and construction. Point being if you are not adverse to some short lengths of rubber line in your system, the inline filter is available for around 20-30 bucks.
But whatever way you go, any additional filtration at all I think is a good idea assuming it does not harm fluid flow. Small price to pay compared to the cost of a transmission rebuild, or a breakdown on the road with possibility of the associated towing expense and ruined vacation...
Mark S. '73 Painted Desert,
Manny 1 Ton Front End,
Howell Injection,
Leigh Harrison 4bag and Rear Brakes,
Fort Worth, TX
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