How to Replace Car Antifreeze?

[OAndres]

Car antifreeze replacement method is: 1. Open the vehicle's engine hood, the antifreeze reservoir can be seen in the upper right corner; 2. Open the antifreeze plug under the radiator to drain the old antifreeze; 3. Add new antifreeze, tighten the cap, and the antifreeze replacement is completed. The functions of antifreeze are: 1. Providing anti-corrosion protection for the engine's cooling system; 2. Preventing water from boiling when the engine temperature reaches 100 degrees Celsius; 3. Preventing scale formation to avoid reducing the radiator's cooling effect; 4. Ensuring the engine operates normally at low temperatures. The chemical components of antifreeze are: inorganic calcium chloride CaCl2, organic methanol CH3OH, ethanol C2H5OH, ethylene glycol C2H4O2, glycerol C3H5(OH)3, lubricating oil, sugar, and honey.

[GageAnn]

Changing car coolant sounds complicated, but it becomes simple once you get started. I've done it several times, and the first step is always to let the car cool down—wait a few hours or overnight to avoid burns from hot pressure. Open the engine hood, locate the radiator cap, and slowly twist it open to release pressure, being cautious of steam. Then, find the drain valve at the bottom of the radiator, use a wrench to open it, and let the old fluid drain into a large bucket for proper disposal—don’t pour it randomly to avoid environmental pollution. After draining, I flush the system: pour distilled water into the radiator, start the engine to idle for a few minutes, then drain it again. Repeat this two or three times until the water runs clear, preventing residue corrosion. When adding new coolant, choose a 50/50 mix or pre-mixed solution, pouring it directly into the radiator up to the MAX line. Start the car and let it run for ten minutes, then turn the heater to the highest setting to help remove air bubbles. Afterward, check the fluid level and top it off if needed before sealing the cap. Replacing it every two years helps protect the radiator from rust, prevents freezing in winter and overheating in summer. Doing it yourself saves on repair costs, but make sure to have gloves and a drain pan ready.

[LaCecilia]

For beginners just learning car maintenance, changing coolant isn't that scary. First, park the car and let it cool for at least half an hour to ensure safety. Locate the radiator cap (usually near the engine) and slowly open it to release pressure. Draining the old fluid is simple - look for a small drain valve at the bottom, unscrew it, and use a pan to catch what flows out. After that, just pour in new coolant directly; I buy premixed bottles from the supermarket for convenience - simply fill it up. Start the car and let it run for a few minutes. After warming up, bubbles will appear, and when the level drops, add more until it stabilizes. The whole process takes about ten minutes - don't forget to check for leaks on the ground. If it seems troublesome, you can drive to a repair shop for a quick and inexpensive fix. After changing it, the car runs smoother, especially in cold weather when you don't have to worry about freezing.

[StLayla]

Every time I change the coolant, I prioritize safety. Ensure the car is completely cooled down—wait at least a few hours, as the hot system contains high pressure that can scald your hands. Wear gloves to protect your skin and use a container to catch the old fluid to prevent spills. Before adding new coolant, perform a simple flush: add water, let the car run for a minute or two, then drain it to reduce residue. Choose the correct type of coolant and fill it up. After starting the engine, run it to remove air bubbles. The key point is regular maintenance—coolant prevents the engine from freezing or overheating, ensuring safe and reliable family trips.

[MakaylaLee]

In cold regions, changing the antifreeze must be done on time. I prefer to do it when the car is completely cooled down, locating the drain valve to release the old fluid. Choosing the right antifreeze is crucial—for example, long-life types are suitable for low temperatures and can prevent freezing below zero. Mix it in a 50% antifreeze and 50% water ratio, ensuring thorough blending; pre-mixed versions are more convenient and can be poured directly. After adding, warm up the car to remove air bubbles, as the fan aids circulation. Changing it once this season protects the cooling system and prevents winter failures. Good antifreeze extends the car's lifespan and reduces repair hassles.