Rich764089
MB Enthusiast
- Joined
- Dec 27, 2020
- Messages
- 1,397
- Location
- Lincolnshire
- Car
- W220 S600, Noble M12 GTO-3R, Jaguar XJ Super V8 (X350), GBS Zero, Defender Wolf 110, Audi A6 BiTdi
Thanks Phil and Steve.There’s also the aircon compressor to consider. If you have a stethoscope, or even a long screwdriver with your ear to the handle, you can touch it on any suspect components and hear if there's a bearing ”singing”.
Given it's very difficult to get people to listen to the car whilst I'm driving (for obvious and understandable Covid reasons), and given I don't really want the garage testing out a noise that only appears at >5k rpm on the road, I've decided I'm going to get the gearbox oil and filter changed next Friday and see if the noise persists after that, then address it if it does.
In the meantime, I'll find my long screwdriver out.....
Thanks again to all for advice, much appreciated.