What color is the coolant for the BMW 7 Series?
2 Answers
BMW 7 Series coolant is red in color. Precautions for using coolant are: 1. The coolant level needs to be checked regularly, and replenished promptly if it falls below the minimum mark; 2. Observe whether the coolant has any turbid sediments, and replace it in time if turbidity is found; 3. Coolants for different car models have different colors and should not be mixed; 4. Before winter, measure the freezing point of the coolant to prevent it from freezing. Models of the BMW 7 Series include: BMW 730Li, BMW 730LiM, BMW 740Li, BMW 730d, BMW 740LixDrive, etc. Taking the 2019 BMW 730Li as an example, it is a full-size car with body dimensions of: length 5273mm, width 1902mm, height 1498mm, and a wheelbase of 3210mm.
I've been driving a BMW 7 Series for five years and know that the coolant is usually blue, which is related to BMW's original design. The blue color indicates it's an ethylene glycol-based formula that better protects the engine from freezing in low temperatures and boiling in high temperatures. The color is important because it helps you quickly check for leaks—if you see pink or green fluid under the engine, it means a different coolant was mixed in, which could damage the cooling system. During maintenance, I insist on using the original blue coolant and replace it every two years to avoid clogging the pipes. Once, I added a cheap non-blue fluid, which caused the engine to overheat, and the repair cost me thousands—a painful lesson. In short, the color is like a signal light, reminding you of the system's health. Don't lose big for small gains.
