System Specifications

Front Axle

181 FBI (Model 30) Mopar Gear Lubricant 80W-90 (Trailer Towing use Mopar Synthetic Gear Lubricant 75W-140)
216 FBI (Model 44) Mopar Gear Lubricant 80W-90 (Trailer Towing use Mopar Synthetic Gear Lubricant 75W-140)
Rubicon 216 FBI (Model 44) Mopar Synthetic Gear Lubricant 75W-140


Rear Axle

194 RBI (Model 35) Mopar Gear Lubricant 80W-90 (Trailer Towing use Mopar Synthetic Gear Lubricant 75W-140)
194 RBI (Model 35) 4.56 ratio, 2.4L engine/42RLE transmission Mopar Synthetic Gear Lubricant 75W-140
226 RBI (Model 44) Mopar Gear Lubricant 80W-90 (Trailer Towing use Mopar Synthetic Gear Lubricant 75W-140)
Rubicon 226 RBI (Model 44) Mopar Synthetic Gear Lubricant 75W-140

Note: Trac-Lok equipped axles require Limited Slip Additive in the lubricant.