Fully Synthetic Premium Oil - ISO 220 Superior Protection Specially Formulated For PD Blowers and Industrial Equipment 1 Gallon - Other sizes available ESP 220 Oil is fully synthetic premium oil that has been formulated for positive displacement blowers. These oils are designed to provide proper lubrication under hydrodynamic and mild boundary lubrication conditions. ESP 220 meets or exceeds the specification requirements for all of the major manufacturers of positive displacement blowers and are compatible with most commonly used seal materials. ESP 220 ISO Blower Oil Technical info: Viscosity @ 40°C,cSt = 230.4, Viscosity @ 100°C,cSt = 24.14, Viscosity Index = 131, Flash Point °C/°F = 262/504, Pour Point °C/°F = -35/-31, Copper Corrosion = 1B, Evaporation % = <1%, Specific Gravity = .87