I wondered when plugs should be changed in the new engines.
When our 2006 Ram with a Hemi was in for servicing with 50,000 KMs (31,000 miles) the dealer said we should probably have the plugs changed. I told them to go ahead. I guess they pulled a couple plugs, said they were fine and never did change them. Truck ran fine till we sold it and not sure if the plugs were ever changed yet.
Our 2010 Ram also has a Hemi. It's just shy of 30,000 miles and so far this winter it has started in multiple days in a row of -35c weather and not being plugged in. One of these days I'd like to see what the plugs look like.
I remember on my older engines I'd be changing the plugs out at 12,000 miles or at least cleaning and regapping. However that was on not so fuel efficient engines.
2013 Forest River Surveyor SP296