Cyltech 70F is a high performance cylinder oil of SAE 50 viscosity engineered for cylinder lubrication of marine crosshead 2-stroke engines burning residual fuels. It has sufficient alkalinity to combat current levels of fuel sulphur content. In addition to its balanced blend of acid-neutralising and detergent additives, it incorporates an ashless dispersant which assists in maintaining cleanliness of cylinder ports, piston ring zones and under piston spaces. Formulated against oil breakdown at high temperatures, Cyltech 70F is suitable for a wide range of conditions and engine designs.