System Specifications

Front Axle

181 FBI (Model 30)
Normal Use Mopar Gear Lubricant 80W-90
Trailer Towing Mopar Synthetic Gear Lubricant 75W-140

216 FBI (Model 44)
Normal Use Mopar Gear Lubricant 80W-90
Trailer Towing Mopar Synthetic Gear Lubricant 75W-140

RUBICON 216 FBI (Model 44) Mopar Synthetic Gear Lubricant 75W-140

Rear Axle

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

194 RBI (Model 35) 4.56 Ratio
2.4 L Enigne/42 RLE Automatic Transmission Mopar Synthetic Gear Lubricant 75W-140

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

RUBICON 226 RBI (Model 44) Mopar Synthetic Gear Lubricant 75W-140

NOTE: Trac-lok equipped axles require 4 oz. (118 ml) of Limited Slip Additive in the lubricant.