7 Best Oil for High Mileage 5.3 Vortec Engine

7 Best Oil for High Mileage 5.3 Vortec Engine

What is the Best Engine Oil type for High Mileage 5.3 Vortec Engine? Royal Purple 11748 HMX SAE 5W-30 High Mileage Synthetic Motor Oil – 5 Qt. 9.7/10 Minimizes wear and restores lost engine performance Increased protection against LSPI Fortified with Zinc/Phosphorus anti-wear additive Extended drain intervals Exceptional oxidation stability Reduces engine deposits Superior corrosion…