Our Antiknock Improver Additive range is a concoction that, when included to fuel, increases the octane estimation of the gas which, thusly, increases the weight and temperature at which the gas will auto-light. It permits the gas/air blend to hold up until the point that the start plug touches off the fuel, decreasing pre-explosion which can be unsafe to the motor. Our generally utilized Antiknock Improver Additive was lead. It worked great and had the symptom of being decent oil for valves seats and valves. In any case, lead is unsafe to people and nature when taken care of inappropriately, so it was eliminated in the US and somewhere else.