Aluminum rust remover DE-20

Recommended by mechanical experts for outboard and inboard engines. Removes scale deposits in cooling systems, heat exchangers, mechanisms, pumps, propellers and engine’s tail. Suitable for aluminium and bronze. Does not damage rubber, gaskets or seals. Neutral odor. Applications: Immersion: For small components, soak them directly in a container with DE-20 . It can also be used by filling completely the cooling system and letting it work. Recirculation: Outboard: Mix in bucket, DE-20 with fresh water and place it under the propeller. Start the engine and let it absorb the mixture through the water inlet and circulate for about 15 minutes. Inboard: a pumping system is needed to inject DE-20 and recover it for recirculation. Depending on the extent of scaling, use a solution of 25-50% with fresh water and do not exceed 45 minutes of application. The solution has a red colour which disappear when it is neutralised.