PROMIX is available in 20%, 25%, 35%, 45%, and 55% Nitro formula's. Specifically designed for high performance engines running in harsh environments such as cars, boats, and high performance aircraft. PROMIX contains a scientific blend of synthetics and degummed racing castors for a total oil volume of 18%. With a blend ratio of 95% synthetic and 5% degummed racing castor. PROMIX fuels have become world renown for their power, transition, and engine life. PROMIX has set several records without sacrificing the engine to do so.