Has anyone changed the transmission oil?

Does the 2013 Volkswagen Touran with a seven-speed dual-clutch automatic transmission need a transmission oil change? At how many kilometers should it be changed? It's been eight years and 80,000 kilometers, always serviced at the dealership. The dealership has changed the brake fluid, spark plugs, and coolant but hasn't mentioned changing the transmission oil.

Has anyone changed the transmission oil?

The transmission is making a loud noise, like a whistle. I even changed the transmission oil, but it didn't help. Has anyone else experienced this?

Is it necessary to change the transmission oil at 40,000 kilometers?

How to check if the transmission oil needs to be changed?

Has anyone changed their transmission oil? How many liters did you use, and did you do a gravity change or a complete flush?

Has anyone in the group changed the transmission oil for the 2021 JMC Ford Territory? This model doesn't have a transmission oil filter. Is it better to do a fluid exchange or a gravity drain by removing the oil pan? 🙏🙏

How often should the transmission oil be changed?

I have a 2018 model car registered in March 2019. It has now reached 105,000 kilometers, and I haven't changed the transmission oil. The fuel consumption displayed has always been at 14. [Shocked] I have a heavy foot. Has anyone changed the transmission oil? Where did you get it done, and how did it turn out?

Has anyone with the 2019 GA6 changed the transmission oil? Is it necessary to change it?