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What is the proper manual transmission lube for a 93 f250 with the 7.3 diesel?

by Guest63688  |  earlier

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what is gl-4 or 5

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  1. NO!!! that is the fluid for an automatic trans... it should be gl-4 or 5.


  2. regular mercon trans fluid no additive just mercon atf

  3. Automatic transmission fluid only, the first answer was correct. The ZF five speed manual used in Ford trucks is designed to use automatic transmission fluid as a lubricant even though it is a manual transmission.
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