Tagradiator

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

Pouring radiator flush into the overflow tank.

Posted August 21, 2020 Maintenance

How to Flush a Radiator

Keeping the engine bay clean is easy, but what about the cooling system? Here’s how to flush a radiator to keep it clean and operating smoothly.

Posted June 29, 20202 Comments Maintenance

Know-How Notes: Cooling System Thermostat Replacement Tips

An engine thermostat that is stuck closed will quickly cause your engine to overheat due to a lack of coolant circulation through the cooling system. When the thermostat gets stuck … Continue Reading Know-How Notes: Cooling System Thermostat Replacement Tips

Posted May 15, 2020 Know How

Why Is Green Fluid Leaking From a Car?

What could green fluid leaking from a car mean? Learn how to find the cause — and the solution.

Posted March 11, 2020 Know How

How To Use AlumAseal ® Radiator Stop Leak

Few things can get you down faster than a radiator or heater core leak. Aside from being a fairly pricey fix, a leaky radiator can quickly lead to overheating the … Continue Reading How To Use AlumAseal ® Radiator Stop Leak

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 man driving on a summer day. There are five major things to check when preparing your car for summer. From checking your car's tires to checking the air conditioning system, here's what you should do if you're getting ready for summer.

Posted June 29, 2019 Featured

How To Prepare Your Car For Summer

Wondering how to prepare your car for summer? The season’s warm weather can be hard on your ride, placing stress on everything from its air conditioner to its battery. Fortunately, there are steps you can take to help your vehicle cruise through the heat without breaking a sweat. Read on to learn how to get your car ready for the dog days of summer. The tasks listed below are easy to…

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…

The bottom of an engine. Keeping your car's engine cool is crucial to ensuring it runs well, which is why a radiator hose plays such a large role. Here's how to diagnose a bad radiator hose.

Posted March 14, 2019 Know How

4 Signs of a Bad Radiator Hose

The signs of a bad radiator hose are not difficult to detect. Here’s where you should look and what to look for to find a bad radiator hose.