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Differential fluid change - do I need friction modifier?

Discussion in 'Ford Raptor Problems and Questions Forum' started by Madcowranch, Feb 5, 2014.

  1. Ruger

    Ruger FRF Addict

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    Thanks, Vash. In your thread (http://www.fordraptorforum.com/f52/transfer-case-fluid-question-3336/#post709372) you mentioned that the spec for the T-case was 7mm (or about 1/4") below the lip of the fill hole. Still agree with that?

    I wrote to Chris at FreedomMotorsports because his recommendation figured so prominently in your thread. He hasn't seen my PM yet, but when he does I hope he'll weigh in.

    I'm probably not going to replace the front differential cover, but I'm looking to replace the transmission pan with a Mag-Hytec cover as soon as Chris can get his hands on them.
     
  2. Drunktank

    Drunktank Full Access Member

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    Which Amsoil Diff Fluid?

    Was going through the Amsoil site and I noticed its calling out two different fluids for the front and rear diffs.

    For the rear is calling for Severe Gear 75W-140 SVOQT
    AMSOIL Severe Gear® 75W-140

    For the front its calling for Severe Gear 75W-110 SVTGT
    AMSOIL Severe Gear® 75W-110

    Seems odd that the front and rear would use different weight lubes. Is it because the ELD requires a friction modifier? Can I get away with using the same lube with a friction modifier in the front diff as well? Guess I'm just a big fan of uniformity.

    What are you guys using in your diffs???

    Thanks gents!
     
  3. Vash

    Vash Full Access Member

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  4. Drunktank

    Drunktank Full Access Member

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    Different fluids?!? Dont they know aint nobody got time for that!

    So do you have to add a friction modifier to the Amsoil for the rear diff?
     
    Last edited: Jul 1, 2014
  5. KaiserM715

    KaiserM715 Kaiser Söze

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  6. MNWILKO

    MNWILKO Member

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    How many miles would you guys recommend waiting before replacing the diff fluid?
     
  7. Wilson

    Wilson FRF Addict

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    depends on if you get in the water or not.
     
  8. Jimbo

    Jimbo Mad Frog Mattis

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    just fill with :e30: you'll be ok
     
    Wilson likes this.
  9. Aramco Raptor

    Aramco Raptor Full Access Member

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    Differential Oil??

    Hi All,

    Ok...going to install a Mag Hytec diff cover when I eventually get back home from this shit-hole and wondering what oil to use?

    Been reading quite a few posts on the subject...any thoughts appreciated...

    Royal Purple, Amsoil, Redline, Lucas etc etc...

    Documentation, facts or personal experiences all welcomed.
     
  10. Yukon Joe

    Yukon Joe FRF Addict

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    Did you read thought the rear diff thread?

    Yukon Joe
     

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