FREMSTILLING AF CYLINDEROLIE

Disclosed is a method for producing a cylinder oil for a marine reciprocating internal combustion engine. The method comprises providing a first fluid having a first kinematic viscosity and a first BN, providing a second fluid having a second kinematic viscosity and a second BN, providing a third fluid having a third kinematic viscosity and a third BN, obtaining data identifying a target kinematic viscosity of a cylinder oil to be produced, obtaining data identifying a target BN of the cylinder oil to be produced, and obtaining data identifying the kinematic viscosity and the BN of each of the first, second, and third fluids. Based on at least the kinematic viscosity and the BN of each of the first, second, and third fluids, the method further comprises determining a ratio of first, second, and third fluid to produce a cylinder oil having a kinematic viscosity corresponding to the target kinematic viscosity and/or a BN corresponding to the target BN, and blending the first, second, and third fluids in the determined ratio to produce the cylinder oil.