Castrol Marine has extended its cylinder oil range to address concerns about engine damage and performance as slow steaming and fuel sulphur content restrictions bite. The specialized marine lubricant supplier has launched Cyltech 80 AW, an 80 BN (base number) cylinder oil. The Cyltech range has been developed for optimum engine protection in 2-stroke crosshead engines and specifically to match engine performance with the demands of varying sulphur fuels and the impact of slow steaming.