RAM 1500 Owner's Manual page 715

Component
Rear Axle – 1500 Models
Front and Rear Axle – 2500/3500 Models
Brake Master Cylinder
Power Steering Reservoir– 2500/3500 Models
MAINTAINING YOUR VEHICLE 713
Fluid, Lubricant, or Genuine Part
We recommend you use MOPAR Synthetic Gear
Lubricant SAE 75W-140 (MS-8985). Limited-Slip Rear
Axles require the addition of 5 oz. (148 ml) MOPAR
Limited Slip Additive.
We recommend you use Synthetic, GL-5 SAE, 75W-90.
Limited-Slip 10.5/11.5 inch Rear Axles Limited slip
additive is not required.
We recommend you use MOPAR DOT 3 and
SAE J1703. If DOT 3 brake fluid is not available, then
DOT 4 is acceptable.
We recommend you use MOPAR Power Steering Fluid
+4, MOPAR ATF+4 Automatic Transmission Fluid.
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