Most differentials need a fluid change at about 50,000 miles. If left too long or if the fluid starts to run low, the differential will become noisy and can eventually fail. If that happens, the gears can seize, locking up the rear wheels and potentially causing a lot of damage or even an accident.
Does changing differential fluid make a difference?
Just like an engine oil change, a differential fluid change is vital too to keep your car in good working condition. Differentials deal with moving parts that involve metal to metal contact that produces heat from friction. … When this happens, its gear will grind leaving behind metal shavings and other waste.
When should I change my differential fluid?
Generally speaking, differential fluid should be changed anywhere from every 30,000 miles to 60,000 miles. Your Chevrolet Owner’s manual should outline differential fluid changes in the recommended maintenance schedule.