Castrol Iloquench™ 100 is a medium viscosity oil that is particularly suitable for quenching intricate components to the required hardness. At the recommended oil bath temperature, its viscosity is low enough to prevent the retention of oil by capillary action and to reduce drag out losses. Iloquench 100 is an additive treated oil that combines high temperature thermal and oxidative stability with low volatility, thus ensuring that fuming and evaporation are kept to a minimum. Iloquench 100 is recommended for use in hot quenching applications where distortion and stress caused by cold quenching is a problem. The product would be used for example in the automotive industry where close dimensional control of the components is essential. Iloquench 100 can be used between 120°C and 180°C. Although the product has excellent resistance to oxidative degradation, it is recommended that at these temperatures, the oil bath is protected from the air by a reducing atmosphere or inert gas.