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Old Feb 28, 2012 | 08:58 AM
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tranny ID?

My 99 F550 super duty, 7.3, 6 speed, has which trans? what fluid does it take?
 
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Old Feb 28, 2012 | 09:15 AM
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You have ZF-6 Manual Transmission. The fluid you use is Mercon or Mercon V transmission fluid. You may find where it says to not use Mercon V. Mercon V was reformulated a few years back and is now fully compatible for use in transmissions where Mercon was originally called out.
 
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