Does your Ram call for 5w20 or 5w30?
Either way, check out Havoline. It's one of, if not the most, highly suggested conventional oils on this board. I wouldn't hesitate to run it 5K.
If you really want to run a synthetic blend and you're engine calls for 5w20, I'd seriously consider Motorcraft 5w20. I use it in my '05 Mazda3 that call for a 5w20. This oil has come back with some really good numbers in the used oil analysis section. I'm running mine out to 7500K.