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post #1 of 20 Old 10-28-2012, 08:39 AM Thread Starter
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Standard Tranny Fluid

Hey everyone, I am looking to possibly change the transmission fluid. I have the ZF5. Can i use synthetic? What fluid does everyone use? Thank you!
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post #2 of 20 Old 10-28-2012, 08:43 AM
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I use synthetic atf in mine

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post #3 of 20 Old 10-28-2012, 01:39 PM Thread Starter
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Right on. Can you put that in a manual transmission?


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post #4 of 20 Old 10-28-2012, 01:54 PM
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Yes atf is what the manual trans takes

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post #5 of 20 Old 10-28-2012, 02:15 PM
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Ford filled the ZF-5 with ATF from the factory. However it was designed (as with all MT & MTX's) to be filled with manual transmission fluid. ATF will do the job, but typically shortens the duty cycle of the unit by ~20%.
It all comes down to cost benefit analysis. If 90% of vehicles use an auto and 10% use manuals, Ford saves money by filling their MT's with ATF as long as the duty cycle still exceeds a typical 100,000 mile warranty period.

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post #6 of 20 Old 10-28-2012, 02:49 PM
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Ford and ZF calls for SYNTHETIC ATF. Ford used Castrol Synthetic ATF form the factory, it was actually green

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post #7 of 20 Old 10-28-2012, 03:04 PM
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As a cost saving measure for the end manufacturer (FoMoCo). Simple as that. Chrysler and GM did the same with NPG/NVG products. There is no reason to put ATF in a manual transmission other than cost savings.

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post #8 of 20 Old 10-28-2012, 03:08 PM
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Originally Posted by backwoodsboy View Post
As a cost saving measure for the end manufacturer (FoMoCo). Simple as that. Chrysler and GM did the same with NPG/NVG products. There is no reason to put ATF in a manual transmission other than cost savings.
I have seen MULTIPLE Abused trucks make it well over 200k with the Original fluid still in it. It must work just fine.

God knows the Castrol Synthetic ATF is NOT cheap

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post #9 of 20 Old 10-28-2012, 03:25 PM
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Cost saving isn't due to the product used as much (although buying in bulk would save a few $), as from minimizing variance between different units. If you're filling two million units a year, minimizing the number of assembly lines needed to do so will be cost effective.
The ZF is a stout unit, no doubt. I'm in no way saying that ATF is the cause of premature failures. The fact that MTF will protect better against synchronizer wear isn't debatable though.

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Last edited by backwoodsboy; 10-28-2012 at 03:28 PM.
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post #10 of 20 Old 10-28-2012, 03:49 PM
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Quote:
Originally Posted by backwoodsboy View Post
Cost saving isn't due to the product used as much (although buying in bulk would save a few $), as from minimizing variance between different units. If you're filling two million units a year, minimizing the number of assembly lines needed to do so will be cost effective.
The ZF is a stout unit, no doubt. I'm in no way saying that ATF is the cause of premature failures. The fact that MTF will protect better against synchronizer wear isn't debatable though.
You are missing the point. the autos got REGULAR ATF. The GASSER ZF and Mazda manuals got REGULAR ATF. But the diesel ZF got SYNTHETIC Castrol ATF.

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