Castle® Power Octane Booster™ is an EPA-registered octane and power booster formulated to increase octane 10 points (the highest allowable by law). When used regularly, it will eliminate spark knock, clean entire fuel system, lubricate upper cylinders, and serve as a lead substitute. Continual use of Castle® Power™ will prevent carbon buildup on fuel injectors. It will not harm catalytic converters or oxygen sensors.
1. Add one 16oz bottle to fuel tank before filling with fuel. This will insure a thorough mix throughout the fuel.
Store away from heat, spark or flame
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U.S. customers, please visit the Castle U.S. Website,
or call 1-800-876-0222.