what kind of gas does my car take

Pulling up to the gas station can sometimes feel like a pop quiz you didn’t study for. With several different fuel grades and types available, it’s easy to wonder, what kind of gas does my car take? Using the wrong fuel isn’t just a hit to your wallet; it can affect your car’s performance and health. The good news is that finding the right answer is usually very simple.

The Easiest Way to Find Your Car’s Fuel Type

Your car’s manufacturer has already done the hard work for you. The most reliable place to check is inside your fuel door. Often, you’ll find a sticker that clearly states the recommended fuel octane rating, such as “Premium Unleaded Fuel Only” or “Regular 87 Octane.” If it’s not there, your owner’s manual is the ultimate guide. It will have a dedicated section on fuel requirements, giving you the definitive answer straight from the source.

Decoding the Numbers: Regular, Plus, or Premium?

You’ll typically see three options at the pump: Regular (87), Mid-Grade (89), and Premium (91-93). The octane rating measures the fuel’s resistance to premature ignition, or “knocking.” Most modern cars are engineered to run perfectly on regular 87-octane fuel. High-performance or turbocharged engines often require premium fuel to prevent knocking and achieve their advertised horsepower. Using premium in a car built for regular won’t give you better performance or mileage, but using regular in a car that requires premium can cause damage over time.

What about Diesel and Flex-Fuel?

It’s crucial to know if your vehicle has special requirements. Diesel fuel is for diesel engines only, and putting it in a gasoline engine (or vice versa) can lead to catastrophic and expensive repairs. The diesel pump nozzle is usually a different color and size to help prevent this mistake. Flex-fuel vehicles (FFVs) can run on E85 (a blend of 85% ethanol) or regular gasoline. These cars are clearly marked, often with a yellow gas cap or badging.

Sticking with the Right Choice for Your Car

Once you know your car’s needs, consistency is key. Following the manufacturer’s recommendation ensures your engine runs smoothly, maintains its efficiency, and avoids potential issues. It’s the best way to protect your investment and keep your car running happily for years to come.