Differential refill question | Ford Explorer Forums

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Differential refill question

Reineger

New Member
Joined
March 2, 2014
Messages
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City, State
Long Island
Year, Model & Trim Level
01 Explorer Sport Trac
I just put a junk yard rear end in my '01 Explorer Sport Trac. As I cross my fingers and hope for the best, I have questions regarding refilling the differential. First off, Lucas claims that their gear oil is "perfect for limited slip differentials, no additives needed" My question, do I need the additive?
What's the capacity of my Differential?
Also, the rear that came out had a "S" shaped spring inside the carrier, the replacement does not have that. What's that about?
 












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