System Specifications

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Front Axle

186 FBI (Model 30) Mopar Synthetic Gear Lubricant 75W-140

Rear Axle

194 RBI (Model 35) Mopar Gear Lubricant 80W-90 (Trailer Towing - Mopar Synthetic Gear Lubricant 75W-140)
226 RBI (Model 44) Mopar Gear Lubricant 80W-90 (Trailer Towing - Mopar Synthetic Gear Lubricant 75W-140)

Note: Trac-Lok and Vari-Lok equipped axles require Limited Slip Additive be added to the lubricant.