Antifreeze Vs. Coolant: What's The Difference?

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Key Takeaways:

  • Your car engine needs special fluid-coolant or antifreeze to keep working correctly.
  • Both antifreeze and coolant are essential fluids in your car, but they serve different purposes.
  • Antifreeze prevents your engine from freezing in the winter, while coolant keeps your engine from overheating in the summer.
  • If you don't know which one you need, consult your owner's manual or ask a professional at your local auto parts store.
  • Also, check how to keep your car’s engine cool.

When you are driving in the winter, and your car starts to make that telltale hissing noise, it's time to add antifreeze. This chemical agent keeps your engine from freezing in cold weather. But what is it? How is it different from coolant? And why do you need both of them? Cumberland Toyota will explore the differences between antifreeze and coolant and explain why you need both in your car.

Antifreeze

Antifreeze is a liquid that prevents your engine from freezing in cold weather. It lessens the freezing point of the water in your cooling system. In other words, when the temperature outside drops, the antifreeze in your car will help keep the water in your engine from turning into ice.

Coolant

Coolant is a liquid that circulates through the engine to absorb heat, then flows through the radiator, releasing heat into the air.

Difference between Antifreeze and Coolant

They both are essential fluids for your car’s engine, but they differ slightly in their purpose and composition:

1. Composition:

So, what's the difference between antifreeze and coolant? Antifreeze is a substance added to water to lower its freezing point, while coolant is a mixture of water and antifreeze used to keep engines from overheating. Both are important for keeping your car running smoothly, so make sure you know which one you need!

While both substances serve an essential purpose, there are some critical differences between them. For instance, coolant contains additives that help protect against corrosion, while antifreeze does not. Additionally, the ratio of water to antifreeze in the coolant is usually 50/50, while the percentage of antifreeze to water in engine coolant can be as high as 70/30. Make sure you use the right mixture for your engine!

2. Purpose

So, why do you need both antifreeze and coolant? The answer is simple: because they both serve different purposes. Antifreeze prevents your engine from freezing in the winter, while coolant keeps your engine from overheating in the summer.

3. Lifecycle

Coolant should be replaced every few years, depending on the manufacturer's recommendation. Antifreeze, however, can last for up to five years before it needs to be replaced.

Types of Antifreeze

The two types of antifreeze are ethylene glycol and propylene glycol. Ethylene glycol is the most common type of antifreeze, and it's what you'll find in most cars on the road today. Propylene glycol is a newer antifreeze type that is considered more environmentally friendly.

So, which is better? It depends on your climate and driving habits. Antifreeze with a high ethylene glycol content is necessary for cold climates to prevent the engine from freezing. Coolant with a high propylene glycol content is required in hot temperatures to prevent the engine from overheating.

If you usually do stop-and-go driving in hot weather, you'll need a coolant with a higher boiling point to prevent overheating the engine. If you primarily operate in freezing weather, you'll need an antifreeze with a lower freezing point to prevent the engine from freezing.

Both types of coolant are effective at preventing engine overheating, but they work in different ways. Ethylene glycol reduces the freezing point of water, while propylene glycol raises the boiling point. It means that a 50/50 mix of ethylene glycol and water will have a lower freezing point than pure water, while a 70/30 mixture of propylene glycol and water will have a higher boiling point.

On the other hand, coolant comes in two varieties: organic acid technology (OAT) and hybrid organic acid technology (HOAT). OAT coolants are typically red or green, while HOAT coolants are usually yellow or orange.

There are also different types of coolants and antifreeze on the market. Some are designed for specific makes and models of vehicles, while others can be used in any car. Check your owner's manual or ask an experienced mechanic before adding any coolant or antifreeze to your vehicle.

Some Unknown Facts about Antifreeze and Coolant

Did you know that antifreeze is poisonous? It's true! Ethylene glycol is a toxic substance that can cause kidney damage if ingested. That's why keeping it out of reach of children and pets is essential.

Coolant is also poisonous, but it's not as dangerous as antifreeze. The main ingredient of coolant is propylene glycol, which is less toxic than ethylene glycol. However, it can still cause gastrointestinal upset if ingested, so it's essential to keep coolant out of reach of children and pets.

Did you know that antifreeze and coolant can be recycled? That's right! You can take your old antifreeze and coolant to a recycling center, where they will be appropriately disposed of.

Maintaining Fluid Level of Your Cooling System

Maintaining the proper fluid level in your cooling system is the most critical factor in preventing engine overheating. The coolant should be at the "full" mark on the overflow reservoir when the engine is cold. If it's not, add enough of the recommended coolant/water mixture to bring it up to that level.

It's best to check the coolant level regularly, especially if you notice the engine is running hotter than usual or if there's an unexplained drop in the reservoir level. A reduction in the coolant level can indicate a leak somewhere in the system.

If you notice your car's temperature gauge climbing into the red zone, or if you see steam coming from under the hood, pull over and call a tow truck. Do not attempt to drive any further until an experienced mechanic checks and fixes the problem.

Need Car Dealership Services in Bakers Crossroads, TN? No Problem!

Winter is coming, which means dangerous driving conditions for everyone on the road. Make sure your car is ready for the cold weather by getting a routine car service at Cumberland Toyota serving Bakers Crossroads, TN. Our team has experienced mechanics who can take care of everything from an oil change to brake repair. Plus, we have a wide selection of new and used cars in our inventory so that you can find the perfect ride for winter weather. See us today, and let us help you prepare for safe winter driving!