First let me say thanks to everyone for all the great info. I recently purchased a totally stock 2000 M5 from the second owner for 30k. He had it for 2 years and only put 5000 miles on it !!

After test driving I could not understand why. This is my second Bimmer, and after graduating from a 323 all I can say is WOW !

The car only has 45000 miles on it, and got compliments from everyone at the dealer

, when I took it in for minor programming issues.
Reading the threads about carbon build up have me a little concerned, as the previous owner babied the car. I searched to see if anyone is running Ventil Sauber or Jectron and did not find any specific refrences. I used to run these in my 3 series with pretty good results, is anyone currently using either of these products?
Pictures attached from after a recent driveway detail session.