Are we definately sure this is a diesel engine? (or a turbo diesel?)
CAJ engine code in Audis latest code list is NOT listed as a TDI variant. (although this is sometimes added in later)
All it states is that it is 3.0 litre, produces 290ps and will be manufactured from Oct 2008 onward in the A6.
Interesting........ http://www.rs6.com/forum/showthread.php?t=14761