Automatic gearbox oil: common signs that it should be replaced

• oil becomes cloudy;
• working fluid smells burnt;
• bulbs and foam appear on the oil surface;
• mechanical inclusions like sand, metal shavings are seen in oil.

How to replace automatic gearbox oil?

Automatic gearbox is extremely demanding of quality of working fluid, that is why you should perform checking of the oil level and quality on the car every 30,000 operational kilometers, and also in case of leakage. Periodicity of automatic gearbox oil replacement depends on car operational conditions and recommendations of the manufacturer. At standard operational conditions, working fluid should be replaced averagely every 60,000 - 100,000 operational kilometers. In case if the car undergoes high loads in extreme conditions, replacement interval reduces to 30,000 operational kilometers. Choosing new oil, adhere to car technical documentation recommendations. Replacement of the oil filter and the automatic gearbox sump gasket should be performed together with oil replacement.

Partial oil replacement can negatively affect the automatic gearbox work. That is why you should replace working fluid completely in case of its quality worsening signs.

Oil replacement for the car with the automatic gearbox should be performed only at a service station. Work is performed by the forcing-through method using a special device with the help of which old oil is displaced by the new one. Specialists control the working fluid color through a special window: when it gains the needed color the procedure is finished.