Description
High-performance engines demand oil that can handle extreme heat, shear forces, and extended drain intervals without breaking down. PennGrade 1 Partial Synthetic 5W30 delivers enhanced zinc and phosphorous chemistry specifically formulated for racing and hard-driven applications, protecting critical engine components under sustained load. Whether you’re building a race motor or pushing your street engine to its limits, this semi-synthetic blend provides the tenacious film strength and anti-foaming properties that separate reliable power from catastrophic failure.
- 5W30 viscosity
- Partial synthetic blend
- High zinc formula
- Enhanced phosphorous
- 1 quart bottle
- Superior film strength
- Anti-foaming protection
- High-temperature stability
- Detergent dispersant package
- Bolt-on convenience









