Hi all. I have a Jeep with an A/T, that I'm considering putting an external tranny filter on. It's the type that plumbs an adapter into the cooler lines, and uses a spin-on engine oil filter.
Do these filters do any good? And will the added restriction of the extra filter, change the line pressure of the tranny? (I don't want to harm anything; don't need any extra problems....)
Thanks for any opinions.
I installed that setup, along with a cooler on a '86 F150 with the 300 inline six. Used that setup with a car hauler all over the country, from Alaska to Maine, and never had a trans problem. Had close to 350,000 miles when I sold it, still had the original trans in it.
Wow! That is amazing. An external filter is going to be my next modification. I'm going to monitor the fluid temp, and maybe install a cooler too, if it's running hot. My thoughts are that if the filter is mounted where there is airflow, it will also serve as a cooler.
I have done this in the past and it works well. There are a few caveats I would mention.
1) Tranny fluid is very thin and will find any leak you have. The filter and fittings must be snuggly installed. Tranny fluid will dissolve many rubber components, especially body bushings, so you don't want any leaks.
2) I was told by a tranny shop that he doesn't recommend the filters because they tend to give lazy people a reason not to do periodic maintenance on the tranny(ie drop the pan and change filter and ATF). Don't be lazy. The best way to know what is going on in your tranny is to drop the pan, look for solids and snif and check the fluid.
3) Many of our trucks are very tight for a flat vertical space to mount the filter. Plan ahead.
I like the filters but did have problems with #1 and bushings. I use the PermaCool brand with the temp sensor.