My other half has a 2005 Vw Golf 1.9 TDI. She does around 30000 on the clock annually. My question is as she is doing high mileage how often should we get the oil change/ oil filter changer and the other filters changed ( air and pollen?). We are hoping to keep the car a while and I want to get into a routine of regular maintenance without over spending unnecessarily. I suggested an annual oil/oil filter change but not sure if I need to combine it with the air/pollen filter or even changing coolant/brake fluid? I always get confused by the experts when i ask with these interim Vs Full services are due.....I just don't want to get ripped off. I am not keen relying on the on board computer to remind as they are never fool proof.

Please help as the more I look online for advice the more confused I get