What does 'max' on the coolant reservoir mean?
2 Answers
'Max' on the coolant reservoir refers to the maximum allowable level for adding coolant, while 'min' indicates the minimum level. The method for adding coolant is as follows: 1. Unscrew the radiator cap to drain the coolant; 2. Run the engine at idle and inject clean water until the water coming out of the radiator is clear; 3. Wait for the clean water to drain completely and close the water valve; 4. Add new coolant until the liquid level is between the 'max' and 'min' marks; 5. Close the cap and let the engine idle for two to three minutes. Precautions for using coolant include: 1. Try to use the same brand of coolant; 2. Ensure the product is within its validity period when adding; 3. Avoid diluting with water; 4. If a large amount of particulate sediment appears, it indicates the coolant has deteriorated and should no longer be used.
The "max" mark on the coolant reservoir actually indicates the maximum fluid level, telling you not to exceed this line. As someone who frequently tinkers with cars, I find this marking crucial because the cooling system generates pressure when the engine is running. If the fluid level is too high, coolant may overflow, leading to engine bay contamination or component corrosion. More seriously, overfilling can also cause reduced cooling efficiency and engine overheating issues. During checks, it's best to keep the fluid level between the "min" and "max" marks to ensure proper coolant circulation and heat dissipation. I recommend checking it every few months, especially during seasonal changes when fluid levels tend to fluctuate. If you notice the level consistently below "min," promptly inspect for leaks to prevent minor issues from turning into major repairs. In short, regular maintenance can save you a lot of money and hassle.
