Description
High-performance engines demand oil that can handle extreme temperatures, sustained high RPM, and aggressive driving conditions—Maxima RS1550 15W50 synthetic delivers precisely that. With elevated zinc content formulated for flat-tappet and roller cam engines, this full synthetic protects critical valve train components while maintaining viscosity stability from cold starts to sustained track sessions. Whether you’re running a vintage race engine or a heavily modified street machine, RS1550 provides the film strength and anti-wear properties that separate reliable power from catastrophic failure.
- 15W50 viscosity
- Full synthetic formula
- High zinc content
- 1 gallon bottles
- Case of 4
- RS1550 specification
- Flat-tappet compatible
- Anti-wear protection
- Temperature stable
- MPN: 39-329128






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