No 75 had oil and filter change last week and the noise has gone. I also had the gearbox and diff oil changed, the diff was almost empty as the plug was loose and had been leaking, just as well I do'nt do many miles.
The noise must have been something to do with the oil pump and filter, mind you I have now got Mobil 1 in. I spent the weekend in Broadstairs Kent so she had a good run and ran very well.
Ken...