torqueshift flushing

[dieseldavem]

I'm sure the question has been asked thousands of times, but I'm having a hard time finding decent info on the proper flushing procedure for this transmission. Has anyone personnally performed this maintenance? Thanks in advance for the info.

[kdogg85]

The way I done it was to change the fluid and filters. Drive for 2000 miles and change fluid again, expensive but cheaper than the dealer. I believe I heard something a while back about unhooking the lines to the transmission cooler and letting the pump pull in the new fluid and push out the old. Never tried that one though.

[dieseldavem]

Thanks for the reply. The best option of course would be to tie in to the coolant lines and drain from one while adding fluid to the other while cycling through the gears with the truck running. This would ensure a complete flush including the torque converter. I've used the multiple drain/fill method before which depending on the amount you can drain from the pan flushes out most of the old fluid after about five changes.

[jesilvas]

The we did it at our shop was the way dieseldave said. We had a machine that tied into the cooler line and did NOT pressurize the system. If a shop's machine does that, turn around and leave. We had a Wynn's machine. It would let the TC push out the old fluid and replace it with new at the exact same rate. 1:1 exchange.
Also, the 5R110 has a thermal bypass so that the fluid does not go into the cooler until it is at a certain temp. Make sure you warm it up really good first.

[Mr. Black]

Unless you feel the fluid has been compromised I would just follow the owners manual intervals. Its a drain and fill with alternating filter changes. No need for a flush.

If you tow a lot then maybe add an extra change in there after the towing season???? Thats all I do.

[CT Performance, Inc.]

I listen to BTS..never flush..drop the pan change the filters and add fluid every 30k. If you have a pre '08 replace the pan and stupid screen with a real filter and the '08 up pan.

Should cost less than $150

Filter #8C3Z7A098D
Pan #8C3Z7A194B

[smokersteve]

Look at my sig.