My 2011 Ram 1500 5.7L Hemi is still going strong. Just 155,000 miles and recently replaced the spark plugs (again) and a fuel pump relay.
Been very reliable, use Valvoline 5W20 Full Synthetic oil, NAPA Gold filters, and maintain regularly.
I have the MAX CARE Warranty as well, so hopefully if it ever does fail, it'll be covered.
I've not had a Mopar engine fail on me yet. My friend did blow up a 318 one time, though, but he bought very used and abused and we found out that the previous owner used Pennzoil and didn't change it often...totally gunked up.
JS
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