What are the consequences of not diluting BMW coolant with water?

[DeAngelina]

There won't be much impact. The original BMW coolant concentrate is a glycol-based coolant with a very high ethylene glycol content, accounting for more than 90%. If the original BMW coolant concentrate is used without dilution, there won't be any problems in the short term. However, the higher the concentration, the greater the viscosity, and the greater the resistance to coolant flow, which can affect engine cooling. More information about coolant is as follows: 1. Adding water: Distilled water should be used for dilution, not tap water, to prevent impurities in tap water from depositing in the radiator and causing scale. The original BMW coolant concentrate is a glycol-based coolant with a very high ethylene glycol content, accounting for more than 90%. When the concentration of ethylene glycol liquid is below 66%, the freezing point decreases as the concentration increases. When the concentration exceeds 66%, the freezing point increases as the concentration increases. 2. Ingredients: The main components are usually labeled. Although the colors may differ, if the main components are the same, mixing them won't have much impact. Sometimes, even if the colors are the same, if the main components are different, they must not be mixed.