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Ford Performance Rear Diff cover

Discussion in 'Ford Raptor Engine Discussion and Performance Mods' started by Todd Turbo S, Mar 7, 2020.

  1. Gcode450

    Gcode450 FRF Supporting Member Supporting Member

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    Hmm, I was wondering what mod I might do next... ordered.

    Thanks for the write up Todd Turbo S!
     
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  2. Sy Vo

    Sy Vo Member

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    I bought my 19 used and I thought the performance diff cover came from factory....LOL.
     
  3. Todd Turbo S

    Todd Turbo S Full Access Member

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    you're lucky, do you know if they used AMSOIL? If not, and it were me, I'd use their lube, very easy to change too with your ford performance diff cover...
     
  4. Ricoman

    Ricoman Full Access Member

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    Any of you guys use the Motorcraft Diff. Oil...?? Decided to go with the Spicer Dana Cover,$116 @ RockAuto..they dont sell Amsoil but do have the Motorcraft,,,but it says:
    Note: For a complete drain and refill, some limited-slip axles require addition of Friction Modifier, Part Number XL-3 meeting Ford specification EST-M2C118-A. Refer to Workshop Manual or Owner’s Guide.

    Did any one add the Friction Modifier....??
     
  5. FILRaptor

    FILRaptor Full Access Member

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    Glad you asked, I have same question.
     
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  6. Gcode450

    Gcode450 FRF Supporting Member Supporting Member

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    Amsoil Severe Gear 75W-90 here. No friction modifier.

    Pic from my 2018 workshop manual.. for stock diff.

    8641598D-1139-4518-A6B3-04691FD7E380.png
     
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  7. TRMFAM

    TRMFAM Full Access Member

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    Friction modifier is for limited slip axles I believe all Raptors have the E-Locker and would not require the modifier.


    Sent from my iPhone using Tapatalk
     
  8. lateralis

    lateralis Full Access Member

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    Where are you guys going to get the Lube Locker gasket?
     
  9. nikhsub1

    nikhsub1 FRF Addict

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    You don't need it, the gasket that comes with is pretty good, and since theoretically the diff cover doesn't need to really come off again, I see no need.
     
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  10. Hagasan41

    Hagasan41 Full Access Member

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    Great write up. Just got mine in the mail! Todd, how's the Nyalic holding up? I plan to do a little undercarriage detailing since I'll be under the truck and would like to coat it once done.
     

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