Differential Fluid Spec?

Eman

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2009 Base Mustang 7.5" differential anyone have an owner's manual that can tell me the correct fluid specification?
 

JC SSP

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Google is your friend…. For a 2009 Mustang 4.0L, you need a Synthetic SAE 75W-140 Gear Oil, especially if it has the 8.8" rear, and it usually requires a limited-slip additive if you have a limited-slip differential (LSD). Check your owner's manual or the fill plug for your specific rear end (likely 7.5" or 8.8") but generally, it's a full synthetic 75W-140, with capacities around 1.6 to 2.1 quarts, filled to the fill plug hole.
 

86GT351

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