Grand Cherokee 4WD V8-4.7L (2003)
Fluid - Differential: Fluid Type Specifications
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.