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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Transmission Fluid

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Old May 12, 2021 | 04:52 PM
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Transmission Fluid

I have a 1993 F-250HD 7.3 N/A Diesel with the E4OD Auto Trans. It originally used MERCON Fluid. ......Lots of MERCON Part Numbers now.....What is the correct, Ford recommended Trans. Fluid for my Truck?
 
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Old May 12, 2021 | 04:55 PM
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That would be Mercon V. Mercon is no longer licensed or acknowledged by Ford and died off in 2006.
 
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Old May 12, 2021 | 04:58 PM
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Thank you!
 
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Old May 12, 2021 | 05:06 PM
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Mobil 1 full synthetic ATF that's Mercon V spec has been working well in my truck. I've been changing it between 50-60k miles. Now at 323k miles and just keeps going.

I recognize it's more than likely the fact that I change it at all, and not the fluid brand itself, that is aiding the longevity.
 
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Old May 12, 2021 | 05:27 PM
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Thanks for the info!
 
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Old May 12, 2021 | 05:28 PM
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Thanks for the TSB! Just what I needed!
 
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