My 2021 Ram 1500 5.7 has about 16k miles on it. The first test referenced was Pennzoil Ultra 5w20. The second was amsoil xl 5w20. And the third one was this latest test with Royal Purple 5w20 which seems to be lacking. Mainly moly and boron. All three tests had similar miles; 2.5-3k. The copper continues to come down and it was nice to see those tin and lead levels disappear. The “unit time” from the other tests was my mess up. Guess I wasn’t understanding what they were asking for before.
I’m running Royal Purple again this interval but I’m considering going back to Penn Ultra.
Edit: oil filter was the fram synthetic endurance
I’m running Royal Purple again this interval but I’m considering going back to Penn Ultra.
Edit: oil filter was the fram synthetic endurance