Maxima Castor 927 Racing Premix - 1LMaxima's Castor 927 is a castor based, ester fortified 2 stroke engine oil designed to ensure maximum performance while providing maximum protection under the most severe conditions. Carbonization and vaporization resistant formulation combines surface active esters with a highly refined castor oil to provide excellent film thickness and surface tenacity, protecting cylinder walls, journals and other critical areas. Proprietary ash free additive