I still follow this forum but went over to a '24 GMC 1500 Denali last year when I started having order issues for a new RAM. Anyway, I don't think you're killing the planet you might be saving your truck - who knows for sure. However what the 6.2 GMC gurus are saying is to change oil at about 3-4K even though they use Dexos full synthetic with a recommended change at 7500 miles. The 7500 is influenced more by the EPA and manufacture constraints on too many oil changes, the environment of course, etc. not so much the life of your truck. Designed to get you past the warranty period anyway. Short story is yes I'm changing at about 50% oil life. I like the GMC but intend to keep looking at RAM for 2026-2027. For the time being I have lost faith in Stellantis but I see there are some happy customers presently.