2011 Ram 1500 5.7 Hemi. I know 5-20 is the preferred oil here. Or is it? Regular Dino at 5000 oci,syn blend at 5000 oci or full syn at 7500. I plan on using a Toughgard Fram filter and since im in Mn Fleet Farms Resolute brand oils. Citgo product. Good stuff and cheap when on sale