Tagantifreeze

Searching for antifreeze info? Check out all the antifreeze related articles here on the NAPA Know How blog. We’ve got Know How for all!

Posted November 8, 2019 Know How

Water vs. Antifreeze: Which Is Safest for Your Car?

Here’s what to consider when deciding between water vs. antifreeze for your car’s cooling system.

Pouring coolant into a reservoir. You may know coolant colors, like purple, green, and blue, but there's another type of coolant called Hybrid Organic Acid Technology. Here's the lowdown on these super-protective family of coolants.

Posted October 4, 2019 Know How

What Is OAT Coolant?

What is OAT coolant? Can you mix it with HOAT or IAT?

A car's radiator cap. Keep on top of your radiator's condition to ensure safe and reliable motoring all season long.

Posted August 30, 2019 Know How

4 Symptoms Of A Bad Radiator

These symptoms of a bad radiator will help you catch the culprit before it leaves you stranded.

A coolant cap on a car. There are three major types of coolant, which include HOAT, OAT and IAT. Here's how to tell the difference between the three and four things to know about HOAT.

Posted June 27, 2019 Featured

What Is HOAT Coolant? 4 Things You Need To Know

Engines are complex machines with rapidly moving metal parts and small clearances. And as such, they generate a lot of heat. You already know that coolant is an integral part of keeping your engine from exploding, and you probably also know that you have multiple coolant options that aren’t interchangeable…

Posted January 11, 2019 Know How

How Engine Coolant Works and Why Your Car Needs It

As temperatures drop, a very important liquid is at work in your car to help keep it running. Known traditionally as “antifreeze” and sometimes thought of as “coolant,” this fluid runs in a circular pattern under the hood to maintain the temperature for key components…

The lengthy grille on a Lincoln Continental shields the car's radiator.

Posted January 4, 2019 Know How

When to Replace a Car Radiator: Key Warning Signs

Your vehicle’s radiator is a vital component that helps keep the engine cool. Here are a few key signs to look for to know when to replace a car radiator.

A driving looking at his car's coolant reservoir tank.

Posted December 27, 2018 Maintenance

When to Change Coolant? Before It Ruins Your Engine!

Regular maintenance is key to engine performance, efficiency and reliability. Knowing when to change coolant will keep your engine cool for years.

Posted December 23, 2018 Know How

Winter Safety Tips and Your Car

Winter presents many unique hazards for drivers. Wind, sleet, ice and snow can make driving treacherous, with bridges and underpasses especially dangerous. We put together a list of five winter safety tips that will help keep you and yours safe as you traverse the frosty highways and byways…

A driver looking at the car's engine bay. An overheating engine can be a major issue for a vehicle. Here's what you should do if you suspect that your engine running hot

Posted December 19, 2018 Maintenance

Is Your Engine Running Hot? Here’s How To Handle The Situation

Engine overheating can do a number on your car. Here’s what you should do if your engine overheats while you’re on the road.

The sun reflects through a water bottle held in a person's hand.

Posted December 13, 2018 Know How

Hot Question: Can I Put Water in My Car Radiator?

You may ask yourself, “Can I put water in my car radiator?” The answer is yes! Here’s how and why water can help you get out of a pinch.