I have a new car 2004 Acura-TSX and I am planning to keep the car for a long time. I don't drive that much on the car 500 Km a month on average and its not a HW driven most of the time is stop and go (short trips). What is the best Oil in this case to buy? How often should I change oil? Do you recommend using synthetic oil in my case? According to my manual I need to change oil every 4 months (sever weather). I appreciate your feed back.