Hey guys I'm new to the forum and also new to the TDI engine. I recently bought a Passat B6 1.9TDI and it looks well maintained from the previous owner. It has a Timing belt 20000km ago and the air filter is new and the coolant is blue. I'm wondering whats the best maintenance to do apart from the above to have a healthy engine. I'll change the oil and oil filter and also the fuel filter but I've seen people cleaning EGR's etc and I'm interested in what else there is. Thanks.