Thanks, and sorry for disappearing. The tick turned into a #8 cylinder misfire this week, check engine light, and loud ticking. Tech at Dodge said, yep lifter / cam lobe. I have done 100% maintenance on-time since new, never missed an oil change, coolant flush, plugs, etc., and almost never idled for more than a few minutes. Most of my miles are highway to/from work. From first minor tick to check engine light in about 4000 miles. Waiting to hear how long they will have the truck under Maxicare Warranty work. Good Luck to all, I had hoped for something minor, but I expected this at some point.
I think the tick was just intermittent at the beginning (right at 150,000 mile oil change) and would go away or quiet down but progressed slowly until the end (154,300 miles). I have read so much and watch so many YouTube videos and it has nothing to do with idling or lack of oil changes. I think it is just low-quality lifters that will eventually wear out.