Yes my series 3 2/14 petrol actually showed 58mph on the dual carriageway back from Birmingham today, on a slightly downhill section, however when I got back to Coventry she was overheating, needed about half a gallon of water to top her up. No obvios leaks but the water has been going somewhere over the last 500 miles or so.
Looks like I need to keep the antifreeze handy along with the big oil container.