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

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.

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…

An engine oil filter. If you've ever wondered what you need to change your car's engine oil, here are the essentials.

Changing Your Oil: The Essentials

Changing your oil regularly is the cornerstone of good car maintenance. It’s not the cleanest job, but just about anyone can do it. So read up on some tips and tricks to make the job easier, then gather the following tools and supplies and get to it.