Bus 429, your memory really is fading ! The oil leak problem was on A6-EME and not 'MD. A6-EMD was the first one delivered and was ferried flawlessly to Dubai, completed with a fine low and slow flypast down Jumeirah beach at 1000" ( remember it well ). A6-EME was the second one to arrive and this was the one that, as is stated, slowly dumped it's engine oil all over the northern hemisphere en route to U.K. Problem was traced to the scavenging oil to the gearbox hydraulicing in the drive shaft and causing the outer case to fracture at the horizontal fire seal. The problem was very clevery sorted by RR who added a few extra large holes in the vertical drive shaft to allow an easy passage for the oil back to the gearbox.
Long time, no hear anyway, miss the aviation quiz !