AMSOIL also makes performance enhancing additives.
Performance Improver gasoline additive cleans you engine, can improve gas mileage & performance, and reduces exhaust emissions. Try it if you're having trouble passing a smog test. Upper Cylinder Lubricant is also available.
Use Octane Boost in high compression engines needing more octane than is available at gas pumps. Low octane levels cause these engines to pre-detonate ("ping" or "knock") which reduces power. Octane Boost solves that.
