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what differential fluid

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Old 03-05-2018, 10:37 PM
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what differential fluid
What differential fluid should i use for a 96 f 150 4 speed overdrive(5 Speed) manual. 300 straight 6?
 
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Old 03-05-2018, 10:54 PM
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Use 80W-90 gear oil. If you have a limited slip make sure to add some XL-3 friction modifier.
 
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Old 06-19-2018, 05:21 PM
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If you want improved shifting always add friction modifier like Motorcraft XL-3. It is actually an anti-foaming agent!
 
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Old 06-19-2018, 06:44 PM
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What does a DIFFERENTIAL additive have to do with shifting?

The TRANSMISSION takes ATF, with no additives. Some people use GM Synchromesh oil instead.
 
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