I have a 2014 Ram 1500 with 5.7 and am orginal owner. I pulled factory oil at 3,000 and put in Amsoil SS 5w20. Ran that to 10,000 on odometer. I disabled MDS with Diablo tuner Than put in Redline 5w-20. I ran that until odometer read 19,000. Sent in for UOA and Blackstone said it looked great...