Every year, automatic transmissions are becoming more and more popular with car owners. This is explained by the ease of operation of a car with such a box, as well asimproved performance of engine power and fuel efficiency in modern automatic transmissions. Many of us don’t understand how often or if automatic transmission oil should be changed at all.
TRANSMISSION OIL CHANGE INTERVAL IN AUTOMATIC GEARBOX
The oil in an automatic transmission is not only responsible for lubricating moving parts, in fact, such oil is the working fluid that is necessary for the proper functioning of the torque converter and solenoids. That is why the condition of the oil and its purity must be given increased attention. It is on the purity of the oil that the performance of the box and the absence of critical malfunctions of the machine will depend.
Many manufacturers do not indicate the oil change interval in the technical documentation or even claim that their boxes are maintenance-free and no service is required in such a case. However, often these are just marketing tricks, if you do not change the oil in the box, then by a run of 150-200 thousand, the state of the transmission fluid will already be far from ideal, and these are critical gearbox failures. That is why most experienced car owners still recommend timely oil changes.
Why, then, in Europe and Japan, individual automakers either increase the service interval, or even declare maintenance-free boxes on their cars. The fact is that when operating on high-quality European roads, as well as in a warm climate, a smaller load falls on the box than during urban operation in a harsh Russian climate.
Accordingly, if, with a careful attitude to the car, the oil in the box can retain its properties for 150,000 kilometers, then with merciless operation, the hydraulic fluid in such a machine will usually require replacement at a run of 80,000 kilometers. Do not forget that automakers are simply unprofitable for cars that can last half a million kilometers without repair. The more often the car breaks down, the more profit is made from the production of spare parts and company services, which also receive money for such repairs.
Direct replacement of gear oil on automatic gearboxes can be performed in various ways. For example, if the box has a drain hole located at the bottom of the transmission, you can simply unscrew such a plug, wait for the oil to drain completely, then close the plug and pour the required amount of transmission fluid into the machine.
At the same time, it should be borne in mind that most of the craftsmen who repair the transmission still recommend opening the sump when changing the oil in the automatic transmission and inspecting the magnets, which should not have a large amount of metal chips, change the sump gasket and drain all the oil if possible. However, you need to understand that this is quite a difficult job, especially since some cars have such a one-time pan and need to be changed every oil change.
Today, many specialized service stations use specialized equipment to change the oil in the gearbox, which allows you to expel the old oil from the box under high pressure, replacing it with a new fresh transmission fluid.
This method allows you to completely replace the oil in the box, but it must be borne in mind that oil consumption, and it is quite expensive, will be large with this replacement method. Therefore, if the gearbox on your car includes 10 liters of oil, you need to purchase 5-10 liters in reserve, which will all go away with such a replacement.