Hi everyone, I have recently bought an immaculate 2009 RX400 which I am very pleased with. It only had one previous owner and has done 44,000. Apart from annual servicing, is there anything I should be aware of with a vehicle this old? How often do I need to be checking the oil for example? I do a lot of motorway miles and expect to be adding a steady 18-20k to the clock every year. Many thanks