(12 Mar 2014, 9:07 pm)tyresmoke wrote Exactly that reason, reliability. I'm sure 7513 has just returned from having a new engine fitted so it may be they're running it in on less demanding territory before sending it back to Whitby.

Engine refit and only 6 year old? The only thing that that engine is good for is your typical Killi to North Walbottle or Wallsend to Chapel House or at a push, a suburban route like the 308 or GNE 21. Anything more and for 7 years of consistent service and few breakdowns, you need either a DAF / VDL DB250, Scania N270UD, or a Volvo B9TL(240 for city / suburban), (270 for suburban / semi trunk and semi rural), (310 for trunk and rural).