Why Is It Important?

• Lubrication: The differential fluid lubricates the gears and other moving parts within the differential, preventing friction and wear.

• Cooling: The fluid also helps cool the differential components, preventing overheating and potential damage.

• Performance: Fresh, clean differential fluid ensures smooth operation, especially during turns, and helps maintain proper power transfer to the wheels.

• Prevents costly repairs: Replacing the fluid at recommended intervals helps prevent excessive wear, noise, poor performance, and even differential failure, ultimately saving you from expensive repairs down the line. 

Signs It's Time For a Differential Fluid Flush

• Unusual noises: Whining, howling, clunking, or humming sounds, especially during turns or acceleration, can indicate insufficient or contaminated fluid.

• Vibrations: Feeling unusual vibrations in the steering wheel or from the rear of the vehicle could also signal a differential fluid issue.

• Difficulty turning: Stiffer turning or difficulty maneuvering can be a sign that the differential is not operating properly due to fluid issues.

• Burning smell: A burning smell emanating from the differential or gearbox can indicate overheating due to inadequate lubrication.

• Fluid appearance: Dark, dirty, or discolored fluid with a burnt smell indicates contamination and loss of effectiveness. 

Recommended service intervals

• General guideline: Most vehicles require differential fluid changes every 40,000 to 60,000 miles.

• Driving conditions: Frequent towing, hauling heavy loads, driving in extreme temperatures, off-road driving, or stop-and-go traffic can accelerate fluid breakdown and may necessitate more frequent changes