I have retired to the Yorkshire Dales and anticipating a bad winter have decided to get rid of my trusty old Peugeot 406 and buy a 4x4 pick-up truck. You talk about diesel particulate filters and that vehicles need to do a certain amount of mileage for them to work properly. I average about fifty miles a week with the shortest trip being three miles and the longest twelve miles plus the odd long trip back down south. Would I be all right with a pick-up with one of these filters?