Instructions for use in the engine: circulate a solution of 200 to 500 ml of salt remover in 10L of fresh water through the cooling circuit for 5 to 15 minutes, either by immersing the tail of the engine in a plastic container with the mixture, or connecting a hose to the water inlet holes through earmuffs. How to use on surfaces: connect the Sadira mixer unit to the hose to apply the mixture on the surfaces to be treated. Instructions for use in equipment: submerge them in the same mixture for 15 minutes. In all cases, rinse afterwards with plenty of fresh water.