All of my hemis I have used Mobil1 5W20 full synthetic. will do the same for the RAM.. Have also used Pennzoil Platinum synthetic..5.7 HEMI...when is the 1st oil change due and what is best oil to use? Semi synthetic Castrol?
I've heard different times to change oil from dealerships...
Glad to see that you're also physically checking the oil which is what matters, but I wouldn't doubt that a way someone drives will impact how the oil shows up around that 10k mark, I think if its a case of someone driving hard and often, it's more likely to be in a less than favorable state.The book says 10,000 miles, so I followed that recommendation and the oil was clean. I will be following the 10K rule of thumb in the future.
ALWAYS use either Semi Synthetic or Full Synthetic.