how to change coolant in car

Your car’s cooling system is a silent hero, working tirelessly to prevent your engine from overheating. At the heart of this system is the coolant, a special fluid that circulates, absorbing and dissipating engine heat. Over time, however, this fluid loses its effectiveness and can become contaminated. Knowing how to change coolant in car is a fundamental skill that can save you money and protect your engine from costly damage. It’s a task that seems daunting but is quite manageable with a little guidance.

The Essential Tools and Materials You’ll Need

Before you begin, gather your supplies. You’ll need a new gallon or two of coolant (check your owner’s manual for the specific type), a pre-mixed 50/50 solution is easiest. You’ll also require a funnel, a drain pan, a set of basic wrenches or sockets, and some disposable gloves. It’s also a good idea to have a jug of distilled water on hand for flushing and a piece of cardboard to kneel on.

A Step-by-Step Guide on How to Change Coolant in Car

First, never work on a hot engine. Let your car cool down completely to avoid the risk of burns from hot coolant or components. Locate the radiator drain plug at the bottom of the radiator and place your drain pan underneath. Carefully open the plug, allowing the old coolant to drain out. Once drained, you can close the plug and pour distilled water through the radiator cap opening to flush out any remaining residue, draining it again.

Refilling with Fresh Coolant

With the system empty and the drain plug securely closed, it’s time for the new coolant. Using your funnel, slowly pour the fresh coolant into the radiator or the coolant reservoir until it reaches the “Full” or “Max” line. Start the engine with the radiator cap still off and let it run for a few minutes. This helps purge air bubbles from the system. Top off the coolant level as needed, replace the cap, and you’re nearly done.

Why This Simple Task Matters So Much

Changing your coolant isn’t just about following a maintenance schedule. Fresh coolant contains corrosion inhibitors that protect your engine’s aluminum and metal parts from rust and scale buildup. It also maintains the proper boiling and freezing points, ensuring your engine runs efficiently in both summer heat and winter cold. This simple act of care prevents overheating, which is a leading cause of major engine failure.

By taking the time to perform this maintenance yourself, you’ve not only extended the life of your vehicle but also gained a deeper connection to its care. Remember to properly dispose of your old coolant at a local service station or auto parts store. Your engine will thank you for many miles to come.