How do you maintain a wet dual-clutch oil cooling system? This guide covers key points such as selecting specialized fluids, changing the oil along with the filter, and heat dissipation techniques after aggressive driving. It also includes methods for checking for leaks in the piping. Practical and professional, it is suitable for various wet DCT models.
一. Changing Transmission Fluid (Core Key Point)
（1）Oil Selection
Use wet DCT-specific transmission oil (such as BMW DCT or Audi S tronic-specific oil)
（2）Replacement Interval:
Every 50,000-60,000 km or 4 years; for aggressive driving, shorten to 40,000-50,000 km. Replace the transmission filter at the same time as the oil change.
（3) Oil level check：
After idling the cold engine for 3 minutes, if oil drips out from the inspection hole, it meets the standard.
二、日常使用指南
（1）After a cold start, idle for 2 minutes before driving; moderate spirited driving is acceptable, but avoid consecutive launch starts.
（2）After long periods of high-speed driving, idle for 2-3 minutes before turning off the engine to help the fluids cool down.
（3）Avoid towing heavy loads for extended periods to reduce the transmission load..
三. Regular Inspection and Maintenance
（1） Monthly:
Visually inspect the transmission for external leaks
（2） Every 20,000 km:
Clean the dust from the transmission cooler fins.
（3） Every 50,000 km:
Replace the filter and oil pan gasket, and check the oil for impurities..
Providing you with a scientifically sound daily maintenance guide. We hope this regular maintenance guide will provide you with practical references and help you avoid common maintenance mistakes. Please remember that regular maintenance is key to extending your vehicle’s lifespan. If any abnormal operating conditions occur, please check and repair them promptly. Wishing your vehicle safe driving and that it always maintains good performance.