20w50 Semi-Syn Oil 1 Quart

MAXIMA RACING OILS 20W50 Semi-Synthetic Motor Oil is designed for automotive enthusiasts and mechanics who require dependable lubrication in high-performance and vintage engine applications. This 1-quart container is particularly effective for air-cooled engines, street rods, and modified powerplants that operate under more demanding conditions than factory stock engines.

The semi-synthetic formulation provides a balance between conventional mineral oil and full synthetics, ensuring thermal stability and film strength under high loads. The 20W50 viscosity grade enhances cold-start performance in winter while maintaining a strong oil film at operating temperatures. This oil is engineered to resist viscosity shear, which is crucial for extended drain intervals typical in performance driving.

MAXIMA Racing Oils is trusted by mechanics and restorers for applications such as Harley-Davidson air-cooled V-twins and vintage British engines. While it excels in specific applications, users should verify compatibility with their engine designs, particularly those lacking modern PCV systems or synthetic-grade filtration.