Engine/Transmission (1994 - 1998) spin on trans filter

[Ncostello]

I've only found a few threads regarding the spin on transmission filter for the automatic. Is this actually a total replacement for the internal one, or does it still require the internal one to be in place?



I was wondering if one could just leave the internal filter out all together or use a metal screen or something. Dont know why you would need the internal anyway. With a Mag-Hy pan, I could just pull the plug, spin on a new one, fill and go.



Most importantly though, does the transmission have provisions for the line fittings or is it installed somewhere on the cooling lines.

 

[illflem]

Excellent question. Spin on filters are usually installed on a cooling line in addition to the internal one. The internal filter is on the inlet to the system, the cooling line is on the outlet. Metal shavings deposit on the bottom of the pan, I'd be concerned about a good bump tossing the crud into solution and pumping it though the system without an internal filter. I know of no way to filter the in flow other than internally. I'm no transmission expert but I would leave the internal filter in place and if after a few servicings it doesn't appear to be doing much decide if maybe you can skip dropping the pan till every 100k or so.

 

[Dennis Garrett]

I've used one from the beginning on my Dodge. I had the TC replaced with a Goerends Triple disca couple of weeks ago. They opened up the transmission while they were at it, and brought it up to date. They replaced the forward drive clutch pack, which was down to the limit, and the inner gear for the oil pump. Also the OD sungear which was pitting. Other than that, everything was fine. The original TC lock up lining was worn & glazed too, but still working fine. All this at 165k miles. My filter is a Cross hydraulic filter from a farm & ranch store. It's used for wood splitter return lines, and filters 10 micron @ 20 GPM. It has 3/4" pipe threads in & out, and I put 3/4" pipe to 1/2" barb fittings in each end, and clamped it to 1/2" transmission hose. I spliced it into the rubber hose going into the hot side of the cooler on the drivers side by the radiator. It also has a port where I have a temp probe too. I mounted it horizontaly, on the cross member behind the front bumper. It also has a check valve & directional arrow. I change the trans fluid, & BOTH filters every 30-40k or so. It filters 10 micron, wheras the internal filter filters to 40-50 micron. It keeps the fluid nice & red.

 

[redneckdr]

aux filter

i also installed a Permacool aux filter in the line to the cooler when the truck was fairly new. has T* sensor port. it uses standard spin on (Fram PH8 size) oil filters, and i generally put a Mobil One filter on it and change it with every other or every third oil change. i still have the internal filter in, and would be reluctant to remove it. as said, fluid stays nice and clean. .

 

[Ncostello]

Now I understand how this works. Thanks all. I suppose pulling a Mag-Hytec Pan wouldn't be all that bad... . since it has the drain plug and the o-ring gasket. That alone should reduce the mess and eliminate the gasket scraping. Again thanks for the great input.

 

[redneckdr]

pans

i know maghytec stuff is good... ... . but... ..... if all you want is a pan with a plug, consider the Mopar Performance pan from the dealer. aluminum, finned, deeper, (2 quarts extra capacity), and about half the price of the maghytec. i'm putting one on this PM. $140 from my local dealer. need a part #, let me know.

BTW, also has a 1/2" NPT port that can be used for a T* sensor, if you want the sensor in the pan.