Ford Performance Rear Diff cover

[Gcode450]

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

Thanks for the write up Todd Turbo S!

 

[09facivicsi]

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

 

[Todd Turbo S]

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...

 

[Ricoman]

Installed a Ford Performance Rear Diff cover. As others have said, great quality, more stout and more lube capacity. I did this at 390 miles and had no problem removing the OEM cover. The surface rust came off easily with green Scotch-Brite pad. I flushed the remaining oil with an extra quart if AMSOIL, just very **** retentive.

Took me 2 1/2 hours. Took advantage of the spear wheel being removed and cleaned it/coated with Nyalic.

The instructions call to torque the bolts to 25 lbs, but everything I read and videos said 14lbs, so I opted with 14lbs.

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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....??

 

[FILRaptor]

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....??

Glad you asked, I have same question.

 

[Gcode450]

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

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

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

 

[TRMFAM]

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


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[lateralis]

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

 

[nikhsub1]

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.

 

[Hagasan41]

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.