The maintenance of Audi often needs to change the lubricating fluid or lubricant to protect and lubricate various parts in the gearbox, whether it is automatic or manual. Bearings, shafts, synchronizers and gears must rotate, engage and separate correctly by lubrication. The user manual of each vehicle also stipulates that the filter and lubricant should be changed regularly to ensure the normal operation of the transmission and prolong its service life. If you don't even change the transmission oil often, it can have disastrous consequences.
1、 The lubricity deteriorates. Transmission oil will continue to decompose as use and time increase. If it is not replaced, its viscosity and lubricity will continue to decline, and it will adhere to important parts. The friction of dirty liquid will lead to metal debris floating in the oil, continuously marking the bearing, race, gear and other parts, which may lead to transmission jitter, displacement, even gear and bearing fracture.
2、 It can cause the transmission to overheat. The function of transmission oil is to cool the transmission in addition to lubrication. The old oil that has not been replaced for a long time will continue to overheat the transmission. This heat will further weaken the viscosity and lubricity of the transmission oil and create additional friction. The O-rings, gaskets, rubber rings and seals used in automatic transmission are also deformed and melted due to overheating; too high transmission temperature may lead to poor sealing and liquid leakage.
3、 It can also cause blockage inside the transmission. Various kinds of dirt may form inside the transmission, and metal particles will block the transmission, check valve and filter, which will lead to abnormal high pressure inside the transmission. Automatic transmissions need to be operated at precise pressure. Abnormal pressure will cause the transmission seal to fail; if the manual transmission is blocked, shifting or shifting may occur.
Therefore, it is very necessary for Audi to change the transmission oil regularly. You can replace it according to the time interval recommended in the Audi maintenance user manual. You can also check the safety of the lower transmission through the warranty