Is It Safe to Use Regular Water Instead of Coolant?

Is It Safe to Use Regular Water Instead of Coolant?

Have you ever put water into the coolant tank of your vehicle instead of using antifreeze? You wouldn’t be the first person to do so. Many people believe it is okay to add distilled water instead of coolant, especially if you live in a hot climate. After all, why do you need a fluid to stop freezing if it never gets below 32-degrees Fahrenheit? So, is it safe to use water instead of coolant?
Sure, water is cheaper and might prevent overheating, but this isn’t all that coolant is good for. It’s needed for proper cooling system function. Let’s take a closer look.

Can You Use Water Instead of Coolant? You can use water instead of coolant in emergency situations when you only have access to water. It is recommended to fill the system with the correct coolant mix immediately after repairing the leak. However, never drive with only water in the long run.

It is definitely not recommended to use only water for long-term use, even if you live in a warm climate. It can cause internal rust, overheating, and other issues with your engine if you only use water.

Coolant vs. Water Differences
1. Boiling Point
Few people think about the boiling point differences between water and coolant. However, it’s clear that the operating temperature of your vehicle is going to be hotter than the boiling point of water (212°F).

When you mix ethylene glycol antifreeze in a 50/50 ratio, the boiling point rises to 223°F. That figure is much closer to the engine’s operating temperature. Using waterless coolant changes the boiling point to 375°F or more.

Without antifreeze, the vehicle’s engine is going to overheat. The liquid inside will boil over and evaporate, forcing you to stop your vehicle so the motor can cool off. You can also cause serious damage to the engine by letting it overheat.

2. Freezing Point
The opposite can be said if you live in a cooler climate. Without antifreeze in the cooling system, it will freeze. When your radiator freezes, you have big problems on your hands. In fact, the radiator could crack, rendering your cooling system useless.

3. Corrosion Protection
Over time, the minerals in water are going to create deposits in the radiator that can cause it to stop working correctly. Water is also corrosive to metal, so rust is going to form faster. Both of these conditions are dangerous to your car engine, which is why coolant has special additives to stop rust formation.

When you mix antifreeze, you should always use distilled water because there are no impurities in it. With the right mixture, the metal components are properly protected, ensuring a long life.

What is Coolant/Antifreeze? The terms ‘coolant’ and ‘antifreeze’ tend to be used interchangeably, even though they are slightly different.

• Antifreeze is made from ethylene glycol or propylene glycol, ensuring that the coolant remains in liquid form for maximum protection.
• Antifreeze is mixed with distilled water in a 50/50 ratio, making it a coolant.
• Antifreeze is available in a variety of colors, either green, pink, yellow, red, blue or orange. These colors make it easier to identify the right type of antifreeze for your vehicle.

How Does Coolant Work? As you drive your vehicle, the engine creates a lot of heat and needs to be continuously cooled to work right. If the engine weren’t cooled down, it would lead to complete motor failure.

The cooling system directs coolant flow into the passages of the engine block, as well as the cylinder heads. While the coolant passes through the engine, it absorbs the heat.

Heated fluid moves from the engine to the radiator. As it goes through the radiator’s thin tubes, it gets cooled off because of the air coming through the front of the vehicle. There’s also a fan blowing on the radiator to cool it off. Cooled fluid moves back out of the radiator to the engine once again. This circulation of coolant is what runs the cooling system.

Why is Coolant Important? When the heat created by an internal combustion engine builds up, it can cause numerous problems that are expensive to repair. Not only can the head gasket blow, but the cylinder head can warp, and severe engine damage follows.

By using water in the motor, the liquid evaporates and boils away, leaving the vehicle without fluid. On the other hand, in cold climates, there’s a higher risk that the water will freeze, which leads to cracks in the radiator, a cracked engine block, or failure of the heater core.

Each automaker has a different configuration to the cooling system, requiring a particular coolant for complete protection. You don’t want to use an antifreeze other than the one that is recommended, or you could do more harm than good.

Right Way to Add Coolant
Before you get started, you want to check the coolant levels. Do not open the cooling cap while the engine is hot. Pressure builds up inside and when the cap is removed, it leads to a hot liquid.

As soon as the engine cools down, open the coolant ledger bo hob. You can read the markings on the sides of the tank to look inside and see the level.
If you need more coolant, mix the frost protectant with distilled water as directed. You can skip this step by purchasing pre-mixed coolant. Pour coolant into the overflow tank, but do not fill it all the way through. This liquid will expand when it gets hot. If your vehicle does not have an overflow tank, you can pour it directly into the cooler, but do not exceed the full mark.

Insert the cap and start the engine. At this point, you will need to inspect the leak cooler and hose. Taking care of your cooling system with the right fluid ensures your engine runs as it should.