Method of removing scale from diesel engine water tank

The specific operation method is as follows: first, use 30 kg of water, 2.5 kg of caustic soda and 0.6 kg of kerosene to prepare cleaning solution and pour it into the water tank. Then start the diesel engine, run at a medium speed for about 10 minutes, and then shut down. After 10 to 12 hours, restart the diesel engine, turn off the engine at a medium speed for about 10 minutes, and discharge the cleaning fluid. After adding clean cooling water, start the diesel engine and run it at medium speed to clean itself. Repeat this for 2 to 3 times to completely remove the scale.