An combustion engine comprising a cylinder with a reciprocal piston inside; the engine comprising a first lubricant supply with a pressurized first lubricant and a second lubricant supply with a second pressurized lubricant ; wherein the first lubricant is of a different type than the second lubricant ; the engine comprising a plurality of lubricant injectors distributed along a perimeter of the cylinder and fixed to a wall of the cylinder and extending through the cylinder wall , wherein the injectors are configured for lubricant injection into the cylinder at various positions on the perimeter; wherein each of the plurality of injectors is connected to the first lubricant supply though a first feed conduit for injecting the first lubricant into the cylinder and to the second lubricant supply through a second lubricant feed conduit for injecting the second lubricant into the cylinder ; wherein each of the injectors is configured for selectively injecting the first or the second lubricant ; the engine further comprising a controller for controlling the amount and timing of injection of the first and second lubricant by the plurality of injectors ; characterized in that each injector comprises - a first lubricant inlet for receiving the pressurized first lubricant from the first lubricant feed conduit and a second lubricant inlet for receiving the pressurized second lubricant from the second lubricant feed conduit ; - at least one nozzle with a nozzle aperture extending into the cylinder for lubricant injecting in an injection-phase; - a lubricant flow path from the first and second lubricant inlet to the at least one nozzle for lubricant flow from the first and second lubricant inlet through the at least one nozzle into the cylinder ; - an actuator-driven selection-valve system in the lubricant flow path, wherein the selection-valve system is configured for selectively switching from an idle state to injection of the first or the second lubricant into the cylinder through the at least one nozzle in the injection-phase; wherein each injector comprises an actuator for driving the selection-valve system , wherein the actuator is functionally connected to the controller and configured for being activated by the controller for selectively driving the selection-valve system to cause injection of the first lubricant or the second lubricant under control by the controller as a consequence of the activation of the actuator by the controller . - a first lubricant inlet for receiving the pressurized first lubricant from the first lubricant feed conduit and a second lubricant inlet for receiving the pressurized second lubricant from the second lubricant feed conduit ; - at least one nozzle with a nozzle aperture extending into the cylinder for lubricant injecting in an injection-phase; - a lubricant flow path from the first and second lubricant inlet to the at least one nozzle for lubricant flow from the first and second lubricant inlet through the at least one nozzle into the cylinder ; - an actuator-driven selection-valve system in the lubricant flow path, wherein the selection-valve system is configured for selectively switching from an idle state to injection of the first or the second lubricant into the cylinder through the at least one nozzle in the injection-phase; wherein each injector comprises an actuator for driving the selection-valve system , wherein the actuator is functionally connected to the controller and configured for being activated by the controller for selectively driving the selection-valve system to cause injection of the first lubricant or the second lubricant under control by the controller as a consequence of the activation of the actuator by the controller . <EOS>