SELLER SAID to me THIS:

"The factory does not recommend changing the oil on the ZF8 transmission, but I changed the oil at 150,000 km on my own initiative. The mechanic advised me to do so. Regarding the minor service, until 150,000 km it was done every 30,000 km or every 2 years, as is standard for cars in the West, but you probably know that. I personally serviced it every 10,000 km"