I have 2019 Laramie. After first oil change at 3000 i had them put in PP. At 8000 miles i changed it myself to Rotella Gas Truck 5w20 with a Wix XP filter. Will do 5k mile changes from here on out. Chose the RGT hoping it would be a little more robust while letting me stay with 20weight. Higher moly than PP or PUP