Tranny flush or change?
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Cross-Country
Joined: Aug 2004
Posts: 58
Likes: 0
From: Paisley, OR
Tranny flush or change?
Is it worth just changing the fluid in the transmission (8 to 9 quarts) and the external filter. Or should it be flushed, replacing 17.5 quarts? I just don't want to waste money. The Tech folder used to have instructions on how to flush, but I guess alot is missing. Thanks - Dale
Senior User
Joined: Dec 2008
Posts: 289
Likes: 0
From: Kernersville, NC
I did the change and changed the internal filter. I am not sure but was told as long as it is changed with Mercon Sp at the correct intervals you should be fine. I have an 04 with 138k and its as smooth as ever....
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,717
Likes: 2,643
From: SE Florida
I believe that the flush is better. Changing all of the fluid is much better than changing part of it. The internal filter only needs to be changed at a rebuild. It isn't fine enough to require a change.
You need to have a heated flush machine to flush a TorqShift.
You need to have a heated flush machine to flush a TorqShift.
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 25
From: Middle Tn.
I believe that the flush is better. Changing all of the fluid is much better than changing part of it. The internal filter only needs to be changed at a rebuild. It isn't fine enough to require a change.
You need to have a heated flush machine to flush a TorqShift.
You need to have a heated flush machine to flush a TorqShift.
However, the external filter should be changed every 10 to 15,000 miles depending on driving conditions. I do mine every other oil change. A lot cheaper than a tranny.
