VP Racing ProMax is a premix 2-cycle fuel made with higher-grade base stocks, making it the cleanest-burning 50:1 mix on the market. It's your fuel solution for the unique demands of professional outdoor power equipment, including chainsaws, concrete cutting saws, and cut-off saws. Any high-temp, high-load application will benefit from using ProMax. ProMax is packed with 97 octane for maximum detonation protection. Higher octane is vital for air cooling systems that may get restricted by wood chips, sawdust, or sap-pitch. High octane is critical for jobs requiring frequent starts and stops where heat builds within the engine rapidly.