1. The design of cooling system is unreasonable (generally mature cars do not exist, especially new cars do not have this fault, so this article does not need to consider it).
2. Bad circulation and fast consumption; You can ask a professional repairman to check it. Note that when adding coolant, it should be added after the engine temperature drops. In the process of adding, you have to start the appropriate throttle of the engine, exhaust the gas in its system, and slowly add coolant before you can replenish it. If necessary, drain the cooling system according to the instructions.
3. Leakage; Traces can usually be seen at the leak.
4. The coolant entering the cylinder is burned or enters the oil bottom. There is no water at the bottom of the light oil, but some work is not done very well (compared with removing the spark plug). If there is water at the bottom of the serious oil (oil emulsification), the engine will work unsteadily. Don't lock the target on the cylinder pad at once. Damaged intake manifold gasket can also cause cooling into the cylinder at night, because some engines have water channels on the intake manifold. If the water is badly burned, the engine exhaust pipe will drain water and emit white smoke (different from normal burning white smoke).
Coolant, also known as antifreeze, antifreeze, water tank treasure, etc. The main function is to protect the normal and good operation of the engine, circulate in the engine water tank, and have the functions of antifreeze, anti-boiling, anti-rust and anti-corrosion. Most antifreeze is red or green to see if it leaks or is different from other liquids in the engine to avoid confusion. Cooling engine parts, preventing the cooling liquid from solidifying, preventing the cooling system parts from rusting and overheating.
Engine coolant, usually glycol water solution, is the foundation. Due to the requirements of modern automobile technology, many additives are added to the coolant to protect various engines. The difference of these additives leads to the differentiation of coolant into several camps.
References:
? Public network-How often should antifreeze be replaced?