Can I add pure water if the coolant is insufficient?If the coolant is low, should it be replenished or replaced?

If the coolant is insufficient, pure water can be added, but it can only be used in an emergency, and it needs to be replaced with a new coolant after the emergency is used up. Because the components of coolant include water, antifreeze, etc., when manufacturing coolant, water and antifreeze are prepared in proportion. If the coolant is added with water, it will only cause the proportion of water to be too large, which will reduce the freezing point of the coolant. If it is in cold weather, the anti-icing effect of the coolant may fail, which will lead to the radiator. Damage and freezing of the cylinder head and cylinder block of the engine occur.

In addition to pure water, distilled water can also be added to the emergency added water if the coolant is insufficient, but mineral water must not be added. Since mineral water contains minerals, after adding into the coolant, these minerals may react with the components in the coolant, affecting the function of the coolant.

If the coolant is low, should it be replenished or replaced?

Whether the antifreeze is added or replaced directly is mainly based on whether the antifreeze has deteriorated after the shelf life has expired. Generally speaking, the shelf life of antifreeze is about two years, and the shelf life of some long-acting antifreeze will be longer, which can reach between three and five years. If the antifreeze is missing during the warranty period, the owner can directly add antifreeze. If the antifreeze is no longer lacking within the shelf life, you need to release the remaining antifreeze, and then replace it with a new one.

When adding antifreeze, car owners must add antifreeze of the same brand and model. Because the main components of different brands and different types of antifreeze are inconsistent, there may be chemical reactions when mixed and used, resulting in poor antifreeze effect, deterioration, precipitation and blockage of pipes, etc., thus affecting the normal operation of the cooling system.