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One more Rear Diff Question...

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Old Jul 5, 2008 | 07:40 PM
  #1  
koopzz's Avatar
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From: cleveland, oh
Default One more Rear Diff Question...

Sorry to be a PITA but here I go anywho:

Wanted to chenage the rear diif fluid. KTM already enlightned me to where the fill plug is - thanks again KTM. Now I have two different Gear Oil Weights. The tag on the Diff says to use 75/90 the Haynes and other sources say 75/140. Which is correct?

If it is dependent on the Diff I have the 3.55 Gears and limitit slip on a 4X2. I do have the Traction additive already.

Thanks again! This is the best forum I know of, and I am not just saying that because I need something!
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Old Jul 5, 2008 | 07:50 PM
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Always follow the manufacturer recommendations, if the differential tag says 75/90 then that's what to use.
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Old Jul 6, 2008 | 01:05 AM
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Originally Posted by Just call me Sean
Always follow the manufacturer recommendations, if the differential tag says 75/90 then that's what to use.
+1, haynes is great but ford knows their trucks better then haynes does
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