I am new to the Lexus way. Just bought an LS 400 with 105K miles. Had to travel a bit to get it. Private owner off Autotrader. It appears as if I did ok on the deal. Everything works, clean, consistent maintenance. He was asking about $2000 below retail. Time will tell, of course. This vehicle is a significant upgrade compared to what else is in the driveway. I would like to get some opinions about washing/waxing. Is it ok to do it at the coin-op places? Any particular wax or whatever I can get at Autozone?