Did 5600 miles in my 110 Td5 last month, to Morocco and back, last stretch from Gibraltar to Santandar was 800 motorway miles in 11 hours and all I suffered was a bit of Landy leg rubbing the handbrake. Td5's are actually not that bad to do distance in. Before my 110 goes on another trip I will be either getting an Ashcroft R380 gearbox with a Discovery 5th gear fitted or the cheaper option of simply fitting a 1.2 transfer box, as a remapped Td5 does get through the gears pretty quickly on a motorway and get pretty needlessly revvy.