I have just got a 56 1.9 Multijet Sporting and I want to change the oil and oil filter, fuel filter and air filter. The Local dealer tells me that he can not tell if it has a DPF without looking at the car. If it has the electrics have to be reset after the oil change. In other words the dealer will have to do it and charge me £99. If it hasn't then I can do it myself and save about £60. So what does a DPF look like?