Castrol Hysol™ T 15 is a high performance, chlorine-free semi-synthetic metalworking fluid. It contains an additive package that provides good corrosion protection to machine tools and parts. It also provides excellent product stability which helps to lower the overall operational costs. Hysol T 15 is suitable for large central systems and single sump machines. Hysol T 15 is especially designed for the machining of cast iron and low - medium alloyed steel.