Exactly what should I get done on my 2002 WS6 at 30,000 as fas as "preventive maintenance" goes?? ex.- tune up, rear axle fluid change, and anything else you guys think is necessary to keep my car running as good as possible.

Back in 2000 I got a "30,000 mile" package service done on a 1998- Z-28 that included specific services like: replacing PCV filter , inspect EGR system, check engine timing along with a lot of other basic maintenance stuff. When I left the dealer the Z-28 really felt brand new again at 30,000 miles.