It is a water-based product which cleans the oil and dirt from engine. By means of chemical in the product, it splits and removes the oil easily from the surface. Make sure that the engine is cool before spraying the product on the engine. Do not leave the product on aluminum surface to prevent it from caustic in it.
Instructions: Wait 3 minutes after spraying the product on engine and wash it with pressurized water. You do not need hot water.