Hi, I want to make an oil change. Since I don’t know how to do this, I want to ask you some questions about your experience with mineral or fully synthetic oils. Can you recommend an oil to me? I have read 5W30 fully synthesized should be the right one. About manufacturers the spirits argue. Should I renew the transmission oil immediately with? Some say the transmission oil keeps a car life without changing. If nevertheless, which transmission oil? Oil receiver: Audi 80 Avant 2.6 liter V6 , automatic , engine identification letter ABC , Gtribe identification letter CFY , 170,000 running , year 1994 Schl-Nr zu2 [0588] Sch-Nr zu3 [564] D A N K E