Corvette C5 differential fluid change Redline 75w-90 video by froggy

Introduction

This tutorial guides you through the process of changing the differential fluid in a Corvette C5 using Redline 75w-90 with a friction modifier. Regular maintenance of your differential is crucial for optimal performance and longevity of your vehicle. Follow these steps to ensure a successful fluid change.

Step 1: Gather Necessary Tools and Materials

Before you start, make sure you have all the required tools and materials:

• Tools:

  • Socket wrench set
  • Torque wrench
  • Oil pump (for transferring fluid)
  • Oil catch pan
  • Funnel
  • Screwdriver

• Materials:

  • Redline 75w-90 differential fluid
  • Redline friction modifier (if required)
  • New differential cover gasket (optional but recommended)

Step 2: Prepare the Vehicle

Ensure that your Corvette is safely positioned:

• Park the car on a flat, stable surface.
• Engage the parking brake.
• Lift the rear of the vehicle using a jack and secure it with jack stands for safety.

Step 3: Drain the Old Differential Fluid

Follow these steps to drain the old fluid:

• Locate the differential cover at the rear of the vehicle.
• Place the oil catch pan underneath the differential.
• Using the socket wrench, remove the bolts from the differential cover. If the cover is stuck, gently tap around the edges to loosen it.
• Once the cover is off, let the old fluid completely drain into the catch pan.

Step 4: Inspect and Clean

Take the time to inspect and clean the components:

• Check the differential gears and bearings for any signs of wear or damage.
• Clean the differential cover and mating surface using a scraper to remove any old gasket material.
• If using a new gasket, ensure the surfaces are free of debris.

Step 5: Reassemble the Differential

Reattach the differential cover:

• Place the new gasket onto the differential housing.
• Align the cover and secure it with bolts, tightening them in a crisscross pattern for even pressure.
• Use a torque wrench to tighten the bolts to the manufacturer’s specifications.

Step 6: Fill with New Differential Fluid

Now, it’s time to fill the differential with new fluid:

• Locate the fill plug on the differential.
• Using the oil pump, transfer the Redline 75w-90 fluid into the differential through the fill hole.
• If using a friction modifier, add it according to the manufacturer’s instructions.

Step 7: Check Fluid Level

Ensure proper fluid levels:

• After filling, check the fluid level by removing the fill plug. The fluid should be level with the bottom of the fill hole.
• If needed, add more fluid until it reaches the correct level.

Step 8: Final Checks

Complete the process with final checks:

• Reinstall the fill plug and tighten it securely.
• Lower the vehicle from the jack stands.
• Start the engine and let it run for a few minutes, then check for leaks around the differential cover.

Conclusion

Changing the differential fluid in your Corvette C5 is a straightforward process that can enhance the vehicle's performance. Regular maintenance is key to ensuring your differential operates smoothly. After completing this fluid change, consider setting a reminder for your next maintenance check. Always remember to work safely and consult your vehicle's manual for specific torque specifications and guidelines.