So, lets face facts, even the newest 9000 is an old car. If you want to drive an old car, without the fun of waiting on the side of the road for a tow truck, preventitave maintenance is a must. So what are your favorite things to replace, clean, fix, etc? What do you see as a must-do on a 9000? This turned into a great, informative thread in the NG900 forum, hopefully we can do the same.