Penngrade 15w40 Racing Oil 1 Qt Partial Synthetic BPO71586

High-performance engines demand oil engineered for extreme conditions—not the off-the-shelf conventional stuff sitting on auto-parts shelves. PennGrade 15W40 delivers elevated zinc and phosphorous chemistry that clings to critical engine surfaces under sustained load, protecting your internals when it matters most. Whether you're building a race engine, pushing hard on the track, or maintaining a modified street machine, this semi-synthetic blend provides the film strength and anti-wear protection you need to keep combustion pressures and heat from breaking down your lubrication layer.

• 15W40 semi-synthetic blend
• High zinc formulation
• Enhanced phosphorous chemistry
• Superior film strength
• Anti-foaming properties
• High-temperature stability
• Detergent dispersant package
• 1 quart bottle
• Bolt-on installation
• MPN: BPO71586