- Mar 13, 2020
- Ottawa, KS
Recently this video was posted to YouTube. The guy explains some of the design flaws with the the Gen 3 Hemi that he thinks contributes to the cam/lifter failures. In February I purchased a '13 Ram 1500 5.7L Hemi. It was a single owner truck with a record of service every 5 to 6k its entire life to that point (84k miles). Currently I'm running Royal Purple HPS 5w-30 in the truck. I changed the oil from dealer fill after I put about 1500 miles on it and did a UOA on the unknown dealer fill. Blackstone didn't think there was any indication of issues at the time. Here's my question: In light of all the discussions here and the experience and expertise y'all have, and the video I linked, what do you think is my best bet for my next fill? Stick with RP-HPS 5w-30? Drop to 5w-20? Switch to Redline 5w-20?