Hi,4/4 Sport 2009 strange noise at speed.I suspect a problem with the diff which I have been led to believe is a lsd.On throttle(drivetrain under load)there is no noise,let the throttle off(again drivetrain under load)no noise,on a very light throttle(cruising at 65/70)the noise from the diff is a loud wailing sound,sounds like metal on metal or tractor tyres at speed on a tarmac road!Apply a little throttle and it immediately goes,as does completely lifting off.Any journey at motorway speeds is a real pain.This is my sixth Morgan and the only one to sound like this.Mrs Anderson is not impressed.Your thoughts would be greatly appreciated.I have tried new diff oil with a friction modifier but this has made no difference.
