I read this article:

[URL="http://www.fourwheeler.com/techarticles/drivetrain/129_1002_automatic_transmission_and_power_steering _filters/index.html[/URL]

Both are DIY.

Power steering: cut the rubber hose return line, insert filter, 2 hose clamps, done.

Transmission: jack it up, remove splash shield (all push pins), cut the rubber hose transmission return line, either from the radiator or the auxiliary cooler, insert filter with 2 hose clamps, replace splash shield, done. Less than an hour.

I have pictures but not allowed to post them yet.

 

which model year is your MDX? i have a 2009 and trying to find a good location on the return line for aux transmission filter.

 

Definitely a solid move on both ends. If you host the pictures on flickr, photobucket, tinypic you can embed the picture by pasting the image url into the image link -->