Caterham wrote:

driving along this morning and there's a kinda whistling .....seems to be coming from the rear diff. anyhow at about the same time a Virgin Train is whizzing along just the other side of the field next to me. anyhow how the diff noise seemed to disappear at about the same time the virgin train disappeared into the distance? the joys of having your window open all the time you hear so much more? so could the electro magnetic field around the train (it was an electric train) have an effect on the diff?

also good news on the ultragauge and the low battery alarm. the ultragauge remains disconnected and still no more low battery alarms