Is Antifreeze Coolant. Oftentimes, most people tend to interchangeably use coolant and antifreeze when mentioning their car’s cooling system. Although their end goal is similar – that being to cool down your car – they’re not the same thing. Antifreeze is a base liquid or ingredient, typically made from ethylene glycol or propylene glycol.
Coolant is a diluted form of antifreeze. This means they have the same base properties but work best in different climates. Coolant protects your radiator all year long and antifreeze is designed to give it some added protection in the winter. Good quality coolants tend to have antifreeze properties as standard, but it's always worth checking
I’ve also read claims of racers using 100 percent anti-freeze because of its 387 degree F. boiling point. The problem with this approach is that the specific heat of straight anti-freeze is 0.66 as shown in the accompanying chart. According to the above referenced site, the cooling system has lost 20 percent of its capacity.

So, to answer the common question: Is coolant and antifreeze the same thing? Not quite, but they are closely related. Antifreeze is aptly named for its ability to prevent freezing in cold temperatures.

Antifreeze and coolant are often used interchangeably, but they are not the same thing. Antifreeze is a solution made of ethylene glycol, while coolant is a mixture of 50% antifreeze and 50% water. While similar, coolant is used to remove heat from the engine. The coolant absorbs and dissipates heat, while antifreeze ensures the coolant does not freeze in colder temperatures. Coolant can become acidic with excessive use; this can lead to engine corrosion. Experts recommend inspecting coolant levels and changing the mixture frequently. It’s essential to consult the owner’s manual and expert auto Not much, actually. Antifreeze, usually ethylene glycol, does not freeze easily. It also does not boil easily. When it is added to water, it becomes coolant. You can buy it separately and add it to the water in your radiator—usually aiming for a 50 percent antifreeze to 50 percent water ratio—or you can buy it premixed, generally in that Radiator coolant is a necessary component in any engine cooling system. Coolant helps to regulate the temperature of an engine by transferring heat away from critical areas. It also protects the system against freezing and corrosion. There are many different types of radiator coolants on the market, but not all of them are created equal.
Air conditioning refrigerant transfers heat from the cabin to the condenser. Engine coolant (or antifreeze, which is part of the coolant mix) does what its name suggests: it transfers heat from the engine to somewhere else (the radiator). Engine coolant uses water to transfer the heat produced from the engine combustion (burning fuel) to air

Many professionals use the terms coolant and antifreeze interchangeably because they mean almost the same thing—almost. Although it’s generally okay to regard coolant and anti-freeze as one and the same, that view is not entirely correct. Technically, anti-freeze is one of the ingredients that make up the coolant mixture.

One says coolant and the other says antifreeze. So, is there any difference? Well, in reality, there is none. Both of these solutions are pretty much the same thing. So, you should not get alerted and confused if you notice this when purchasing coolant for your car. A jug of antifreeze will do the trick just fine. .
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    • is radiator coolant and antifreeze the same thing