So, just finished a 1800mile (3,000km) trip in my 2006 Magnum RT AWD . . . had changed oil/filter prior to the trip . . . now I notice I can hear "faint lifter tick" . . . never did this before. I have 237k km (147,265miles) on it, original, never been apart, always change oil/filter at 3k miles (5k km) . . . so am I correct in thinking I might have bad lifter that is taking out the cam ??? Oil pressure still good as always been (50psi at anything over 1300-1500 rpm) . . . just wondering if I need to be concerned ?? Time to change cam/lifters, etc . . .??

Thanks,

Mark