Flush

To use a fluid to remove solid particles such as metal flakes or dirt.To purge refrigerant passages with a clean, dry gas, such as nitrogen (N).

When to Change Your Power Steering Fluid

Power steering makes keeping control of your vehicle easy. Learn when to replace this fluid.

AutoZoner explaining coolant to a customer to ensure answer any antifreeze questions

What Is Antifreeze and What Does It Do?

Ever find yourself wondering about how automotive coolants work? Us too. Learn what you need to know about antifreeze.

STP motor oil in front of a red classic car in the garage

What Does Oil Do for a Car's Engine?

It's common knowledge that oil protects engines. But do you know why?

Diagram showing the locations of major components in the engine cooling system

How the Cooling System Works and How to Maintain It

Your vehicle's cooling system keeps your engine from overheating by pushing coolant that is cooled in the radiator through passages on the engine block and head.