I change the oil every 18,000 miles.  My tdi is on longlife service plan and I use only the best long life oil.

How often do I need to change my oil in a VW TDI?
I'm wondering if there is a source available which has a list of CVE numbers and shows whether they have been patched or not (and maybe a link to a relevant patch). I know Secunia has something like this but I was wondering if there any others.
