If the fluid runs low or becomes contaminated, it can lead to failure of the differential. To avoid this issue, it is recommended that the transfer case fluid be changed periodically, normally every 30,000 miles, especially in vehicles that tow or use four-wheel drive often. When a vehicle is used for towing or is in four-wheel drive frequently
Your 2021 RS5’s oil should be changed according to Audi’s recommended oil change intervals. See mileage and month specifics in the above table. Outside of Audi-recommended oil change intervals, your RS5 may need an oil change if your check engine light is on, you hear engine knocking, sense an oil smell in the cabin, or notice excessRecommended oil for engines of Audi A6. Find out how much engine oil does your car need. Change interval: Oil type: A6 1.9 TDI (66 kW) 3,5 L: 15000 km/ 12 months
PSBxXCu.