The engine's water pipes form part of the cooling system, the main role is to transfer coolant, cooling fluid to assist the engine cooling. The water pipe is divided into upper pipe, lower pipe, auxiliary water tank connected to the water pipe, the car will produce heat while driving, so use water to cool down. There are a lot of holes in the cylinder, the role of the water tank is to store spare water, until the water in the cylinder to a certain temperature, the thermostat will automatically open.
