Engine Tuner (PN:777185).
Evinrude/Johnson Engine Tuner is recommended to maintain full power and efficiency in all internal combustion 2 and 4 stroke engines. It removes gum and varnish build-up and excess carbon deposits from rings, pistons, valves, injectors and ports. Treatment is recommended every 50 hours or once a year. It is not a storage/fogging oil and the motor must be run for a few minutes after the can is empty. You spray the entire contents into the air intakes of the engine whilst it is running at a fast idle. Note: This is classed as dangerous goods and can only be sent via courier not to a PO BOX.