Thread: XF Coupe - Rear Diff Oil ?
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Old May 22, 2012 | 05:56 AM
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Mrmiata
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Joined: Sep 2011
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From: Kellyville, Ok
Default Re: XF Coupe - Rear Diff Oil ?
Nascar uses thinner oils for qualifying than racing.. Less resistance to rotating mass = more speed.. closest I can figure..
 
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