I have a series 1 BF XR6 Turbo with 202,000 kms that I have owned since new. It has the ZF 6 speed gearbox, which I have had serviced about every 50,000 kms.
I had a general service done last week that cleared up oil leaks from the rocker cover and power steering pump and high-pressure hose. After that the engine was steam cleaned.
As part of that service the transmission fluid level was checked and topped up with a litre of ZF Lifeguard.
After parking the car in my driveway, I noticed a remaining oil leak. When I returned to the mechanic, I found that bottom front of the transmission was covered in oil (see attached image).
The leaking oil is darker than the engine oil which was changed at the service (see attached image).
My impression from driving the car is that the transmission is working as it always has. No hesitation, slipping etc.
Any ideas?