Limited slip additive?

2004 FORD F-150
170,000 MILES • 4.6L • V8 • 2WD • MANUAL
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MIKEPR
  • MEMBER
  • 1 POST
Do the 8.8 differential need limited slip additive? Or how do I know I need it?
Mar 1, 2022 at 4:32 AM
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JACOBANDNICKOLAS
  • ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi,

The 8.8" can be either locking or non-locking. The locking does require an additive. If that is what you have, add 4oz of friction modifier XL-3. I would actually suggest using it regardless.

If you want, I attached a pic below showing how to identify the differential.

Let me know if this helps.

Joe

See pic.
Mar 1, 2022 at 8:04 PM
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