Replacing Transmission Fluid
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Freshman User
Joined: Apr 2007
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Replacing Transmission Fluid
I have a 2004, F-350 SD V-10 cc, lb with an auto transmission. The vehicle has 125,000 miles and I do not know the service history. My question is do I replace the trans. oil or continue to drive it as is? The oil does not appear brown or stinky.
HE
HE
Senior User
Joined: Jun 2007
Posts: 459
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From: Rogers, MN
Yes, change it. It is better to know exactly what is going on in your truck rather than guessing. Doing an oil analysis wouldn't be a bad idea either. Just my .02
I have heard against using AMSOIL ATF for the Superduty Transmissions. I have an Early 99 Super Duty with the 7.3L. I like AMSOIL, but I have heard that they cause this transmission to slip excessively. Any insight would be appreciated. This subject was touched briefly in another post.
I have heard against using AMSOIL ATF for the Superduty Transmissions. I have an Early 99 Super Duty with the 7.3L. I like AMSOIL, but I have heard that they cause this transmission to slip excessively. Any insight would be appreciated. This subject was touched briefly in another post.
Post Fiend
Joined: May 2006
Posts: 10,007
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From: Central Florida
I concur, might as well change out all of the fluids and have a base line for future maintenance.
I am using Royal Purple ATF and with my tune and factory tech valve body, no slipping. In fact with the valve body and RP, I am chirping second rather frequently.
I am using Royal Purple ATF and with my tune and factory tech valve body, no slipping. In fact with the valve body and RP, I am chirping second rather frequently.
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
Yep change the tranny fluid and fliter regularly.
It is a good idea to take it to a shop that has a machine to ensure all the old fluid is being pulled out of the torque converter.
Just draining the old fluid by dropping the pan will still leave fluid in the torque converter.
It is a good idea to take it to a shop that has a machine to ensure all the old fluid is being pulled out of the torque converter.
Just draining the old fluid by dropping the pan will still leave fluid in the torque converter.
Senior User
Joined: Feb 2006
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I have removed the tranny cooler line and let the tranny pump out it's own fluid while having a friend add fresh fluid. We kept it running until the fluid coming out cleared up and then shut it down and filled it full. This was on a 1500 suby and it worked well, don't see why it wouldn't work with the ford tranny. Someone correct me if they think it's a bad idea.
Posting Guru
Joined: Nov 2006
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From: muskegon mi.
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Joined: Aug 2007
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Originally Posted by rkcarguy
I have removed the tranny cooler line and let the tranny pump out it's own fluid while having a friend add fresh fluid. We kept it running until the fluid coming out cleared up and then shut it down and filled it full. This was on a 1500 suby and it worked well, don't see why it wouldn't work with the ford tranny. Someone correct me if they think it's a bad idea.
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Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
The only approved transmission fluid for the 5R110 torqshift is Mercon SP. Ford hasn't released the license for manufacture to anyone so it's only available from certain outlets. The pan gasket is reusable and there is an auxillary "toilet paper roll" filter on the right front corner of the truck. Be sure to change that also.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,695
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From: SE Florida
Originally Posted by npccpartsman
The only approved transmission fluid for the 5R110 torqshift is Mercon SP.
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Joined: Jan 2006
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Bearhunter did a write-up on Truck Blog: http://www.truckblog.com/story-582-h...t_transmission