hey sounds like a bit of a stupid question but its because i have driven diesels for the last three years!! At what revs is the engine happy working? eg is it ok be in 4th at 30mph! where is the best power and at what point should i change gear before i lose the power? cheers its a 210 version if that makes any difference on the 4 motion side,if i get into trouble is it best to power out of situations?