The Dodge Charger's rear differential requires regular maintenance to ensure optimal performance and longevity. Changing the differential fluid is a crucial part of this maintenance. This guide will walk you through the process of changing the rear differential fluid in your Dodge Charger.

Tools and Materials

Before starting, gather the following:

  • Mopar Rear Differential Fluid (about 1.5 quarts)
  • Mopar Friction Modifier (for limited-slip differentials)
  • 8mm hex bit socket
  • Ratchet and extension
  • Torque wrench
  • Fluid pump or flexible funnel
  • Drain pan
  • Clean rags

Procedure

Preparation

  • Park your Charger on a level surface and engage the parking brake
  • Locate the rear differential under the back of the vehicle
  • Place a drain pan underneath the differential

Draining the Old Fluid

  • Locate the fill plug (upper) and drain plug (lower) on the rear of the differential
  • Remove the fill plug first using the 8mm hex bit
  • Then remove the drain plug and allow the old fluid to drain completely
  • Clean both plugs thoroughly before reinstallation

Refilling with New Fluid

  • Replace the drain plug and torque to 26 ft-lbs
  • Using a pump or funnel, fill the differential with new fluid
  • Add fluid until it starts to overflow from the fill hole
  • For limited-slip differentials, add the friction modifier as per instructions
  • Replace the fill plug and torque to 26 ft-lbs

Post-Change Procedure

  • Clean any spilled fluid from the differential housing
  • Start the engine and drive the vehicle in a figure-8 pattern at low speed
  • This helps distribute the new fluid and friction modifier
  • Check for leaks after driving

Important Notes

  • Use only Mopar-approved fluids for your Dodge Charger
  • The differential typically requires just over 1 quart of fluid
  • Change the fluid every 30,000 to 60,000 miles, or as specified in your owner's manual
  • If you hear whining or grinding noises, change the fluid immediately

Regularly changing your Dodge Charger's rear differential fluid will help maintain its performance and extend the life of your vehicle's drivetrain components. If you're unsure about performing this maintenance yourself, consult a professional mechanic.

FAQs About Dodge Charger Rear Differential Fluid Change

    • How often should I change the rear differential fluid in my Dodge Charger?
      Generally, every 30,000 to 60,000 miles, but consult your owner's manual for specific recommendations.
    • Can I use any type of differential fluid?
      No, use only Mopar-approved fluids specified for your Charger model to ensure proper performance and avoid damage.
    • Do I need to add friction modifier?
      Yes, if your Charger has a limited-slip differential. Always add the specified amount of Mopar friction modifier.
    • What if I hear noises from the rear differential?
      If you hear whining, grinding, or other unusual noises, change the fluid immediately and consult a mechanic if the problem persists.