I am a relatively new Acura owner but have considerable experience with the maintenance and repairs of other quality vehicles. I tend to change oil at the 3-5K range. I notice the filler cap specifies 5w-20 oil. 5w-20 oil is hard to find where I live. Any other recommendations? We are very happy with the car. A 1993 400E was replaced by it as our family trip car and one of my wife's daily drivers.