What is the boiling point of BMW coolant?
2 Answers
BMW coolant has a boiling point of 107°C. It is recommended to choose brand-name coolant produced by reputable manufacturers to ensure quality. Additionally, select a coolant suitable for the local climate and vehicle model. Generally, the freezing point of the chosen coolant should be 10-15°C lower than the local minimum temperature. Coolant composition: Coolant primarily consists of ethylene glycol and water, meaning it is an aqueous solution of ethylene glycol, which has certain electrical conductivity. Coolant functions: Coolant prevents the freezing of the liquid in the cooling system during cold winter parking, which could otherwise cause the radiator to crack or the engine cylinder block or head to freeze and damage. Coolant is not just for winter use but should be used throughout the year. Regardless of the color of the coolant, it should maintain a certain level of transparency; cloudy products are not of good quality.
As a veteran BMW driver with over a decade of experience, I always pay attention to the condition of the coolant during maintenance. The boiling point of BMW coolant is generally around 108 degrees Celsius, which mainly depends on the mixing ratio of coolant and water. At the standard 50/50 ratio, it's 108 degrees, with the ethylene glycol component significantly raising the boiling point. What's the benefit of a higher boiling point? The engine is less likely to overheat during high-speed driving or hot weather, reducing the risk of the radiator boiling over. The temperature gauge in my car normally reads 90 degrees; if it rises abnormally, I need to be alert as the coolant might have become diluted or accumulated deposits. BMW-specific coolant might have a slightly higher boiling point, but it generally fluctuates around 108 degrees. Regularly check the coolant level and color during daily driving, and avoid cheap, inferior products. If the boiling point is too low, the engine can suffer severe damage, leading to exorbitant repair costs. It's best to replace it with genuine coolant every two years for safety and peace of mind.
