10w30 Racing Oil Cs/12Qt Partial Synthetic

The 10W30 Racing Oil Cs/12Qt Partial Synthetic from PennGrade Motor Oil is engineered for high-performance and modified engines where conventional mineral oils fall short. Designed for enthusiasts who demand superior lubrication during sustained high RPM operation, this partial synthetic formulation bridges the gap between budget-conscious maintenance and premium synthetic protection. Whether you're running a street-performance build, weekend track car, or daily-driven modified engine, this racing-grade oil delivers the thermal stability and film strength necessary to protect critical bearing surfaces under extreme loads and temperatures.

PennGrade's partial synthetic blend combines refined mineral oil with synthetic base stocks to achieve a 10W viscosity at cold start and 30-weight protection at operating temperature. This SAE 10W30 rating ensures reliable cold-engine cranking while maintaining robust hydrodynamic film strength under high-heat, high-shear conditions common in forced-induction and carbureted performance applications. The "CS" designation indicates this formulation meets compatibility standards for racing environments, resisting viscosity breakdown, sludge formation, and oxidation degradation during extended throttle sessions. The twelve-quart case packaging (weighing 22.19 lbs) provides convenient bulk quantity for fleet maintenance, multiple vehicle rotation, or businesses managing performance equipment.

This racing oil is ideal for rebuilt or modified engines, naturally aspirated and turbocharged applications, and classic hot rods where OEM synthetic recommendations don't apply. Mechanics and tuners rely on PennGrade's proven track record in competition environments and street-performance builds where oil analysis and repeat use validate long-term engine protection. Always verify your engine's manufacturer specifications and consult your vehicle's service manual before switching viscosity grades; 10W30 partial synthetic is most appropriate for warm-climate operation or engines specifically tuned for this weight. Store in a cool, dry location and inspect containers for damage before installation.