First, just try a heavier grade oil. If you're using a 5W15, switch to a 10W30 or even a 15W50. That should help you get some more miles out of the engine.
Good quality oil, no short runs, always get the engine up to temperature, regular oil and filter changes, regular engine flushes.
It is an interference engine, but it doesn't always bend valves.
Yes they do. All engines are required to have oil changes at regular intervals, depending on the type of engine.
The Chrysler Concorde has a timing chain, which is supposed to require no changes, however there have been problems with the 2.7 liter V6 timing chain which would ultimately destroy the engine.
No. It is a gimmick. Do regular oil & filter changes instead.
No.No.
The 2013 Chrysler 300 has a V6 engine.
The 2006 Chrysler 300 has a V6 engine.
The 2005 Chrysler 300 has a V6 engine.
The 2014 Chrysler 200 has a V6 engine.
The 2010 Chrysler 300 has a V6 engine.
The 2011 Chrysler 300 has a V6 engine.