Caution: Not intended for use in oil injection systems. When blending with alcohol, it normally requires more oil. Care must be exercised when blending with low specific gravity (below 0.730) race gasoline or aviation fuels and in temperatures below 35F as separation may occur. Separation may also occur in alcohol containing a high percentage of nitromethane. Check before using. Technical Data: SAE viscosity: 40. Color D 1500: Yellow. Gravity: 17.6 A.P.I. Viscosity SUS @ 100F: 617. Viscosity SUS @ 210F: 73. Viscosity cSt @ 40C: 133.1. Viscosity cSt @ 100C: 13.79. Pour point: -5F. Flash point: 420F. Fire point: 480F. Viscosity index: 99. Reduces carbon and gum formation and provides excellent rust and corrosion protection. Contains an exclusive additive that keeps power valves cleaner and working properly. Castor 927 is biodegradable. Recommended premix ratios: 50 - 80cc (24 - 32:1) | 125cc (24 - 40:1) | 250cc (24 - 40:1) | 500cc and up (32 - 60:1).