How often is the transfer case oil changed?What type of oil is added to the transfer case

Under normal use, the transfer case oil is checked every 30,000 to 50,000 kilometers, and only needs to be replaced if there is a problem. If the transfer case oil has no faults such as water ingress or oil leakage, it is no problem to replace it once the car runs 100,000 kilometers. Because the temperature of the transfer case oil is not high, it is much lower than the oil temperature of the transmission oil, there is no external leakage, and it is basically difficult to deteriorate.

What type of oil is added to the transfer case

The transfer case is filled with ATF automatic transmission oil. ATF has finer oil molecules and high-efficiency shear resistance. In the semi-clutched state or at the moment of coupling, the oil film acting on the surface of the friction material can play a very effective suspension state and slip, so The momentary powerful impact is buffered, making the combination smoother and shifting smoother. At the same time, the valve stuck phenomenon is greatly reduced by the delicate oil molecules, which makes the valve body work smoothly.

The main function of the transfer case oil is to lubricate and radiate these gears. If there is a problem with the transfer case oil and it is not changed for a long time, the lubrication performance will decrease, and there will be a lot of metal debris in the oil. These metal debris will continue to circulate in the transfer case with the oil, which will aggravate the wear of the transfer case gears.