Rear Differential, Is the friction reducer required for my truck?

Tiny
MORGANIZER032
  • MEMBER
  • 2005 FORD F-150
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 252,000 MILES
Is the friction reducer required for my truck? (Limited slip)
Monday, May 22nd, 2023 AT 7:11 AM

1 Reply

Tiny
BRENDON S
  • MECHANIC
  • 653 POSTS
Hello MORGANIZER032,

Yes. All Ford limited-slip rear axles require 4oz or 8oz of Friction Modifier Motocraft XL-3 whenever servicing equivalent depending on axle size. I have added an image of the fluid specifications chart depending on axle size as well as a photo of the Motocraft product for you. I would just go to Ford for it personally.

Thank you,
Brendon
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Monday, May 22nd, 2023 AT 10:43 AM

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