How often should the oil be changed for a 7-speed wet dual-clutch transmission?

[StLucas]

7-speed wet dual-clutch transmission oil should be changed every 60,000 to 80,000 kilometers. Below is relevant information: 1. Working principle: The transmission relies on transmission oil for heat dissipation, lubrication, and hydraulic power transfer. If the transmission oil is used for too long, it will significantly reduce the performance of the transmission. When the transmission oil becomes severely contaminated, it can also lead to a series of transmission failures. 2. Hazards of not changing the oil in time: Failing to change the transmission oil promptly can result in weak starts when the car is cold. Additionally, transmission oil deteriorates and evaporates under high-speed and high-temperature conditions, which can accelerate the wear of mechanical components and, in severe cases, damage internal transmission parts. It can also cause the transmission oil to thicken, making it easier for the transmission cooler to become blocked, leading to excessively high transmission oil temperatures, increased wear, and minor slipping phenomena during vehicle operation.