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Old Sep 2, 2014 | 03:32 PM
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From: reno nevada
zf6 fluid

What is a good fluid to run in the ZF6 speed. I have used the regular mercon and have some hard shifting issues once in awhile.
 
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Old Sep 3, 2014 | 07:52 AM
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If your asking about your 2002 F-250 tranny & it calls out auto-tranny fluid, you should be using Mercon-V as this TSB indicates. Fulltext TSBs | Ford Trucks

Mercon-V is a semi-synthetic friction modified fluid that's back specified to replace Mercon. It has a better quality base oil & additive package than the old Mercon recipe, so you might find you'll get better shift quality using it. Let us know how it goes.
 
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Old Sep 3, 2014 | 12:57 PM
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From: reno nevada
6 speed

Will do. I apprecaite the input.
 
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