Transmission fluid flush and oil brand - Ford Powerstroke Diesel Forum
6.7 Tranny Problems 6.7 Tranny Problems

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Old 09-20-2013, 09:02 PM
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Transmission fluid flush and oil brand

So I've got new to me 2012 F350 CC SRW with 12K miles on it. Not my first diesel but first Ford in a while. In regard to the transmission I'm wondering when the first tranny flush should be? I've always been a nut about regular maintenance and truly believe regular fluid changes and quality oils are key factors in transmission longevity.
With that being said I've also been a big Amsoil user. Any thoughts on using Amsoil in Fords Torqushift?
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Old 09-20-2013, 09:15 PM
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Does your FORD manual not have a service section? For my 5R110 I believe its 30K off the top of my head.

Personally, I'd stick with what Ford recommends for fluid. I've had pretty good luck with amsoil except for a 5R55E auto that slipped shortly after using amsoil ATF that was supposedly compatible with mercon V. But if it meets the requirements for your warranty, you could give amsoil a try.
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Old 09-21-2013, 04:19 AM
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I did'nt go to the manual yet. I happened to be in front of my comp which is why I posed the question here.
I have heard of a few problems with using Non OEM dealer lubricants with respect to transmissions. However nothing close enough to me to veify. I've long been a synthetic believer and have much engine experience with it. In fact successfully used it in Duramax's and Kubota's with 2X change intervals and no problems.
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Old 09-21-2013, 06:16 AM
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The problem.... well, its not necessarily a problem but the "unknown factor" is how the new 6R140 will accept a different fluid. Its new still and most don't know or have heard of no reviews.

Its a good practice to change fluids often in the early stages of life. Just like you would change engine oil frequently when new, I feel similar "break in" habits should be followed for a transmission and diffs. New parts are tight and haven't "worn" into each other yet so a trans fluid change and new filters certainly couldn't hurt.

Edit: I just read that the fluid exchange interval for your transmission is 150,000 miles??? That seems like a lot of time for one fluid to spend in such an advanced transmission behind 800lbs of torque!

Last edited by gotta_gofast; 09-21-2013 at 06:24 AM.
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Old 09-21-2013, 06:59 AM
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Very true on the "Problem" associated with different oils. However I still trust the fact that Amsoil and some others still manufacture a higher quality oil than OEM's.

It befuddles me how people can spend $60K on a truck and ***** about the cost of filters and ignore diff changes. Truthfully, all the diff's should be changed yearly i think, darn cheap insurance.

Be assured of this, there is no way I will let the trans flush/change go to 150K miles. I was thinking more along the lines of 50K. Again, cheap insurance, to avoid the cost of fixing or replacing the torqshift. Can't even imagine what it could cost.
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Old 01-20-2014, 02:51 PM
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With 12k your a long way from having to mess with the trans.

but like others have said stick with Motorcraft fluids and filters at least for trans.
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Old 04-22-2014, 08:50 PM
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Anyone know what's the price of a trans oil change for our trucks? Duffs?
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Old 05-22-2014, 02:05 PM
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Quote:
Originally Posted by golfpineacres View Post
Very true on the "Problem" associated with different oils. However I still trust the fact that Amsoil and some others still manufacture a higher quality oil than OEM's.

It befuddles me how people can spend $60K on a truck and ***** about the cost of filters and ignore diff changes. Truthfully, all the diff's should be changed yearly i think, darn cheap insurance.

Be assured of this, there is no way I will let the trans flush/change go to 150K miles. I was thinking more along the lines of 50K. Again, cheap insurance, to avoid the cost of fixing or replacing the torqshift. Can't even imagine what it could cost.
What befuddles me is when people think that since it's synthetic or Amsoil, it must be better than the factory fluid. Ever think that the factory fill is a synthetic itself? Go ahead and throw the most expensive fill in there and tell us what happens when/if you have a warranty issue...

It's not cheap insurance, I call it ignorance in the thought that if it's more expensive, it has to be better. Cheap insurance would use the recommended fluid and changing it at a shorter interval.
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Old 10-12-2014, 04:04 PM
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50'000 miles for synthetic fluids,, easy to remember
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Old 10-12-2014, 04:24 PM
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Originally Posted by ipz2222 View Post
50'000 miles for synthetic fluids,, easy to remember
..................
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