what type of coolant does my car need

Popping the hood to check your coolant level is a great habit, but when it’s time for a top-up or a change, a simple glance at the colorful liquid isn’t enough. Coolant, often called antifreeze, is a carefully engineered mixture that does more than just prevent freezing. It also raises the boiling point to prevent overheating and contains additives to protect your engine from corrosion and scale. Using the wrong type can lead to expensive damage over time.

So, how do you figure out what type of coolant does my car need? The answer isn’t one-size-fits-all, and it has evolved significantly over the years. The color can be a clue, but it’s no longer a reliable guide on its own.

What Type of Coolant Does My Car Need? The Owner’s Manual is Key

The single most reliable source for this information is your vehicle’s owner’s manual. Look in the index or table of contents for “coolant specifications,” “capacities,” or “fluids.” The manual will specify the exact type required, often referencing a manufacturer-specific standard. This is your golden ticket to getting it right.

Decoding Coolant Colors and Technologies

While not a definitive guide, coolant color can give you a general idea. Inorganic Additive Technology (IAT), the old green coolant, was common in older cars and required more frequent changes. Most modern vehicles use Organic Acid Technology (OAT) or Hybrid Organic Acid Technology (HOAT). These come in a rainbow of colors like orange, red, pink, blue, and yellow, with formulations specific to different manufacturers. For instance, a certain shade of orange might be for General Motors, while a specific yellow is for many Fords. Mixing the wrong types can cause them to gel and clog your cooling system.

A Simple Guide to Finding Your Perfect Coolant

If you don’t have the manual handy, don’t worry. Many auto parts stores have systems where they can look up your vehicle’s make, model, and year to provide the correct coolant. You can also look for a coolant that is labeled as “universal” or “all-makes, all-models,” but be sure it explicitly states compatibility with your vehicle. When in doubt, buying from the dealership’s parts department guarantees you get the right formulation.

Taking a few minutes to confirm the correct coolant for your car is a small task that pays off in a big way. It ensures your engine stays at the perfect temperature and is protected from corrosion for years and miles to come. Your cooling system will thank you for the careful attention.