
Audi Q5 uses ZF transmission oil. Generally, the transmission oil needs to be replaced once when the vehicle has traveled 60,000 kilometers. When replacing the automatic transmission oil, most of the time the screw on the automatic transmission oil pan is removed to drain the old oil and then new oil is added. However, this method can only replace about 30% of the new oil, while the remaining 70% of the old oil still remains in the transmission. The following are the functions of the automotive transmission: 1. Change the transmission ratio to expand the range of torque and speed changes of the driving wheels to adapt to frequently changing driving conditions, while allowing the engine to operate under certain working conditions. 2. Enable the car to reverse while maintaining the same rotation direction of the engine. 3. Utilize the neutral gear to interrupt power transmission, allowing the engine to start, idle, and facilitating gear shifting or power output in the transmission.

I've been driving an Audi Q5 for almost five years and have changed the transmission fluid three times. I always thought the original oil was too expensive, but later I tried ZF's DV6-specific oil and felt the gear shifts were much smoother. During one maintenance session, the mechanic mentioned that Fuchs' 75140 series also meets the standards and offers good value for money. The key is to check your transmission type—ZF's 8AT works best with ZF oil, while dual-clutch models can use Audi's original or Mobil's ATF. Don’t forget to check the maintenance manual for certification numbers like G055162A2. My neighbor tried to save money with a no-name brand oil and ended up spending 8,000 yuan on transmission slippage repairs—definitely not worth the savings.

Our repair shop has received many Q5 owners, and there are numerous cases of using the wrong brand of transmission fluid. The primary principle is to adhere to the manufacturer's certification standards, such as G052162A2 for wet dual-clutch transmissions and G055162A2 for 8AT. Among the commonly used brands, ZF has the best compatibility, Fuchs excels in molecular structure for anti-degradation, and Mobil's full synthetic offers superior low-temperature fluidity. For older CVT transmissions, special attention must be paid to the viscosity coefficient, requiring the use of specialized CHF fluid. In fact, the original factory fluid is OEM by Fuchs, and buying the same specification yourself can save 30% in costs. When changing the fluid, remember to check the filter screen, as aging seals can render the new fluid change ineffective.

Just changed the transmission fluid for my Q5 last week after doing thorough research. The genuine Audi fluid was too expensive, so a friend recommended using Lubegard's JASO-certified fluid - the gearshift became noticeably smoother after the 130,000 km change. Among mainstream brands, Shell's Spirax series has German certification, while ZF specializes in transmission fluids for German cars. The key is matching the transmission model - my 2018 8AT requires low-viscosity fluid, while the 7-speed DSG needs special green fluid. Don't delay fluid changes - it should be replaced every six years or 60,000 km, otherwise sludge buildup can damage the valve body.


