Coolant and antifreeze are the same, with no difference. The following is a related introduction about coolant: 1. Characteristics of coolant: Automotive engine coolant is mainly composed of water, ethylene glycol, and additives, with corrosion inhibitors being the primary additive. The main function of additives is to prevent corrosion, while also providing anti-scaling and anti-foaming effects. Currently, the base fluid for automotive engine coolant is primarily ethylene glycol, and the difference between various coolant formulations lies in the use of different corrosion inhibition systems. Under the premise of water and ethylene glycol as the base fluid, the key technology in coolant formulation research is the selection and combination of corrosion inhibitors. Typically, coolants are classified into inorganic salt type and organic acid type based on the composition of corrosion inhibitors, with inorganic salt types further divided into phosphate type, amine type, and silicate type. 2. Product performance: Engine coolant consists of three parts: water, antifreeze, and additives. Depending on the antifreeze component, it can be categorized into alcohol type, glycerol type, ethylene glycol type, etc. Alcohol type coolant uses ethanol (commonly known as alcohol) as the antifreeze, which is cheap, has good fluidity, and simple preparation process, but it has a low boiling point, is prone to evaporation loss, has an easily increased freezing point, is flammable, etc., and is gradually being phased out.
