The RDX trans fill port is located 15" below the brake reservoir, on top of the trans. The bolt head is marked ATF. It is difficult to reach and service.

A slower but much easier method of filling the trans is through the dipstick tube. A 9mm o.d. clear nylon hose will fit snugly into the dipstick tube. Fit the other end onto a nozzle cap from a gear oil bottle, and put that on your quart of ATF-Z1.

You can watch the progress through the clear tube.

 

Acura ATF Z1 is the same as honda atf-z1 right. On that bottle it says its formulated specifiically for acura vehicles.

 

^^^ Correct - same stuff...

 

Identical product, I got it for $4/qt by buying a case.

 

Its the same crap

 

anyone knows how many qt of fluid does the rdx takes??

 

How may quarts do i need to fill the transmission??

 

bump for answer

 

As for the # of Quarts, 4 should do. Check out my DIY at https://acurazine.com/forums/1g-rdx-diy-faq-161/diy-acura-rdx-tranny-fluid-change-792834/

 

Maybe this can help out