Completely normal for the 3.3 and 3.8 liter engines. FWIW, I first heard the light knock in the engine in our 1998 DGC back when it had 50,000 km on it, by the time I traded the van in with 275,000 km on the clock the knocking was still there, no better or no worse, and the engine ran as well as it did the day I drove it off the showroom floor.
Originally Posted by Michel from Holland
Sold: 1998 DGC Sport 3.8 (Final odo: 178,000 miles)
Sold: 1998 Chrysler T&C LXi 3.8 (Final odo: 190,000 miles)
Sold: 2003 DGC ES 3.8 (Final odo: 172,000 miles)
1999 Chrysler T&C Limited 3.8 (Current odo: 200,000+ miles)
2001 Honda Accord EX-L V6 (4-Speed automatic)
2012 VW GTI (6-Speed manual)