Dictionary

Coolant (Chapter 4) is the working fluid of the engine cooling system. it consists of water, antifreezing solution, special additives that protect the cooling system of the internal combustion engine from corrosion processes and the fluid itself from thermochemical destruction. Ethylene glycol-based coolants are currently widely used. All ethylene glycol coolants differ in quality only in a set (or absence) of necessary additives and degree of dilution with water. Glycol-based coolants are not dangerous to humans. They are poisonous only when ingested.