Dodge Ram Ram 1500, DS/DJ (USA / CAN)

Additional Notes

• Across all 2008-2010 Dodge Ram 1500 DS/DJ configurations listed, the limited slip differential additive capacity is uniformly specified at 118 CM3. This figure represents the volume of friction modifier additive introduced alongside the primary gear oil, not the total differential fluid fill volume.
• Limited slip differentials require a dedicated additive to condition the clutch packs inside the unit. Without the correct additive volume, the clutch packs can chatter during low-speed turns, which is a recognized symptom of improper lubrication in this differential type.
• The 3.7 V6 in 4x2 configuration is the only variant in the 2008-2010 range specified under normal use conditions. All V8 configurations, as well as the 3.7 V6 in 4x4 form, carry a severe use designation for the rear limited slip differential service interval.
• Under severe use conditions, drivetrain components are subjected to greater thermal and mechanical stress, which is why the severe designation appears across the 4x4 variants regardless of engine displacement. The 4x4 drivetrain introduces additional load cycling through the rear axle compared to a 4x2 setup.
• The check interval of 30,000 km or 18 months applies uniformly across all six configurations, covering both the normal-use 3.7 V6 4x2 and the severe-use V8 and 4x4 variants. The interval is expressed as a dual condition, meaning whichever threshold is reached first would govern the service timing.
• The 4.7 V8 and 5.7 V8 variants share identical differential additive specifications with each other and with the 3.7 V6 4x4, indicating the 118 CM3 additive capacity is tied to the rear axle assembly rather than engine output.