Operation CHARM: Car repair manuals for everyone.

Fluid - Differential

Rear Axle - 248 RBI (Model 60)
Mopar Gear Lubricant 90W

Rear Axle - 9 1/4
Mopar Gear Lubricant 75W-90
*Trailer Towing - Mopar Gear Lubricant 75W-140

Rear Axle - 8 1/4
Mopar Gear Lubricant 75W-90
*Trailer Towing - Mopar Gear Lubricant 75W-140

NOTE:Trac-lok equipped axles require a friction modifier be added to the lubricant.

CAUTION: If axle is submerged in water, lubricant must be replaced immediately to avoid possible premature axle failure.