How Do You Know if Your Differential Fluid Is Bad?

One of the symptoms that is most commonly associated with bad or failing differential or gear oil is a noisy transmission or differential. If the gear oil runs low, or becomes excessively dirty, it can cause the gears to whine or howl as they turn.

Does Jiffy Lube change differential fluid?

Jiffy Lube® drains the used fluid and replaces it with differential fluid that meets or exceeds your manufacturer’s specifications.

Is rear differential service necessary?

For most cars, you just need to change the rear differential fluid every 20,000 to 40,000 miles. Because there is some variation, you should look at the owner’s manual for your vehicle to confirm your ideal service interval. From there, you can ask your mechanic about the cost to service your rear differential.

Is differential fluid the same as transmission fluid?

Differentials use gear oil/fluid. A manual transmission also uses gear oil but the viscosity may be a bit different. In an automatic transmission, definitely not; the fluid is much thinner and is called ATF – automatic transmission fluid.

How do you check differential fluid?

Check Fluid Level. Fluid should be at or just below the bottom of the Fill Plug hole. Fluid should not be black or gritty. If fluid is low, check for leaks.