Doesn’t the differential oil need to be changed for life?What are the symptoms of differential oil not changing

Car differentials don’t need to be replaced for life, and they need to be replaced every three years or 60,000 kilometers. Differential oil is a lubricating oil developed for the lubrication of the rear wheel differential of rear-drive vehicles, which can effectively protect the differential to a certain extent. The differential oil also plays a role in heat dissipation, but the differential oil will not have a special heat sink, so the thermal stability of the differential oil is higher.

What are the symptoms of differential oil not changing

If the differential case oil is not replaced for a long time or the differential case oil needs to be replaced but does not need to be replaced for a long time, the performance will decline after a long time, and the gear friction in the differential structure will increase, resulting in excessive differential gears. Wear and tear will increase the fuel consumption of the vehicle, and will damage the differential, differential lock and other components for a long time, causing the differential to work poorly and affecting the driving quality.

The differential oil of some high-performance rear-drive vehicles needs regular inspection and replacement. Because of high performance and powerful engine performance, the differential is working at high speed and high load, and the differential oil temperature will be very high at this time. If such automobile differential oil is not changed, the oil will easily decay under long-term high temperature, resulting in poor lubrication and wear of the differential gear. There are also some off-road vehicles with differential locks. The differential structure of these vehicles is complicated, and the working environment is also very bad if they are often off-road. The differential oil of this kind of cars needs to be checked and replaced regularly.