Most automakers recommend changing the differential fluid every 30,000 to 60,000 miles, but be sure to check your owner’s manual or use the free FIXD app for accurate maintenance schedules. How Often Should You Change The Differential Fluid? If excessive metal is found in the fluid, it’s likely that the gears have been damaged and need to be replaced. Waiting too long to perform a differential fluid change can result in damage to the axle’s gears and/or seals. What Happens If You Don’t Change The Differential Fluid? Some vehicles have a drain plug on the axle to drain the differential fluid without removing the cover, but most will require removal of the cover and a new sealant gasket installed. In its simplest breakdown, servicing the differential fluid consists of removing and reinstalling the differential cover (in order to drain the fluid) and then topping off the differential with new fluid. This service can also be referred to as the drive axle assembly drain and refill. For this reason, the differential fluid must be changed regularly and at specific mileage intervals for proper maintenance.Ĭhanging the differential fluid is an easy job that usually consists of removing the differential cover to drain the fluid, reinstalling the cover, and then refilling the differential. The axle differential is filled with a high-viscosity oil to ensure the gears are properly lubricated.Īfter time, this fluid breaks down and loses its viscosity, which can lead to the axle’s internal gears being damaged. On these vehicles, the transmission is connected to the drive axles with a driveshaft, and the engine’s torque is distributed across the axle (to both wheels) through a set of gears called the differential. Most modern cars use front-wheel drive, but trucks and large SUVs still use rear- and four-wheel drive. When in doubt, always refer to your owner’s manual. Keep in mind: There are many different types of differential fluid, so be sure to choose fluid that is designed for your vehicle. It’s a messy job, but it is usually an easier job than changing the engine oil or coolant. You can reduce the cost of changing differential fluid by doing this job yourself. Regularly changing the differential fluid as part of a preventative maintenance will maximize the lifespan of your gears and limit the chances of an axle fluid leak. Get a more accurate estimate for your differential fluid change using RepairPal’s Fair Price Estimator For a more accurate estimate based on your make, model, and location, use the RepairPal Fair Price Estimator. Related repairs or maintenance may also be needed. This price range is based on national averages for all vehicles and does not factor in taxes, fees, or your particular make and model. The Average Cost to Change Differential Fluid Is $79-$93.
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