Is it worth saving the cost of an oil change to have the newest and/or dumbest guy at a Chevy dealership touch your Ram? That's who's doing oil changes.
The people who say they won't put the wrong oil in it are optimistic. Maybe they will, maybe they won't.
The last, and I do mean last, time a Chevy dealership touched a vehicle of mine it was at least a Chevy. They put the lid on the air filter housing on wrong and tried to charge me to scan why the check engine light came on. "Passed" the windshield wipers when I knew one was missing half the rubber (I hadn't gotten around to changing it yet and didn't drive it in bad weather).
Ram dealership isn't any better. I used to get their oil change packages for my 2012, cheaper than I could change the oil myself. Then they put the wrong oil in. I looked at the paper work and noted it was not the synthetic the package included. They asked me what I wanted them to do about it. Well, take it back in the shop and do it right this time. Also the last time I bothered with them for anything not warranty work.