Lucas Oil Octane Booster, 2 oz. - 4 Pack Model: 10725 A Real Octane Booster Tested and proven to deliver three times more boost than most other brands Performance Enhancer Stops knocks, and raises MPG in high compression engines Safe for turbos, oxygen sensors and catalytic converters Suitable for use in fuel injected and carbureted engines Provides more boost than most other brands Promotes clean fuel burn for fewer emissions Lubricate rings for improved cylinder life Lucas Oil 10725 Octane Booster Race Formula Performance Enhancer 2 oz. - 4 Pack.