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

2005 FORD F-150
252,000 MILES • 5.4L • V8 • 4WD • AUTOMATIC
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MORGANIZER032
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  • 1 POST
Is the friction reducer required for my truck? (Limited slip)
May 22, 2023 at 7:11 AM
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BRENDON S
  • ✓ASE Certified Mechanic
  • 653 POSTS
  • ASE Certified Mechanic
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
May 22, 2023 at 10:43 AM
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