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Does an Automatic Transmission Car Need Water in Its Radiator?

4 Answers
VonEmery
07/29/25 6:54am
An automatic transmission car does not need water in its radiator. Here are some additional details: 1. The role of the car radiator: If the radiator doesn't leak, it may not need water for the entire year, but regular checks are necessary. New cars usually don't require additional coolant in the radiator, and if needed, only radiator fluid or antifreeze should be added. The car radiator, also known as a heat exchanger, is a key component in the car's cooling system. Its function is to dissipate heat. The coolant absorbs heat in the water jacket, flows to the radiator to release the heat, and then returns to the water jacket to circulate, thus regulating temperature. 2. The radiator: The radiator should not come into contact with any acid, alkali, or other corrosive substances. It is recommended to use soft water; hard water should be softened before use to prevent internal clogging and scale buildup in the radiator. When using antifreeze, to prevent corrosion of the radiator, always use long-lasting rust-proof antifreeze produced by reputable manufacturers and compliant with national standards.
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LePiper
08/12/25 11:06pm
When it comes to automatic transmission radiator issues, I've seen many car owners make mistakes. The radiator actually refers to the cooling system's radiator, which is specifically designed to hold engine coolant. Never add plain water directly! Neither tap water nor purified water is acceptable, as it can cause rust and corrode internal pipes, and in winter, it may even freeze and crack the radiator, leading to major problems. Coolant is a mixture of antifreeze and special additives that not only lubricates the water pump and raises the boiling point to prevent overheating but also prevents corrosion. Every time I service my car, I check the coolant level and add an appropriate amount of mixture if it's low. You can also pop the hood yourself and locate the transparent radiator reservoir (usually containing red or green liquid) to ensure the fluid level is between the min and max marks. If you notice the level is too low or the coolant has changed color, take it to a repair shop immediately. Remember, regular maintenance is key to engine longevity and safety—don't take risks to save a few bucks.
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DelDamian
10/04/25 4:48am
As an ordinary person who drives frequently, I think maintaining the radiator is quite important. In an automatic transmission car, the radiator is essentially the reservoir for coolant, primarily used to prevent engine overheating. You shouldn't add water because it can freeze or cause rust, leading to leaks or engine damage. Coolant is a specially designed mixture for cars that can adapt to high and low temperature changes. I usually check the fluid level every month to ensure it's normal, and if it's low, I top it up with the appropriate coolant brand. Another common misconception is thinking that air conditioning condensation water can be added—this is absolutely wrong! During maintenance, it's best to change the coolant once a year to keep the system clean. Simply put, adding water will shorten your car's lifespan, so spending a little money on coolant is more cost-effective.
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LaMila
11/17/25 6:22am
I was curious about this question when I first learned to drive. The radiator is the core part of the cooling system, and it requires coolant instead of water. Water can corrode metal components and may clog the system, causing overheating. Coolant is a factory-pre-mixed liquid that protects the engine. The checking method is simple: open the hood, locate the radiator labeled with coolant, and ensure the liquid level is within the marked lines. If it's low, refill it promptly—never delay.
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