10 Common Car Maintenance Myths That Waste Your Time and Money

Maintaining your vehicle is essential for keeping it running smoothly and safely in the long run. However, many drivers fall victim to long standing misconceptions that often lead to unnecessary maintenance or costly repairs. In the sections below, we shed light on some of the most widespread car maintenance myths and reveal the truth behind them, helping you make more informed decisions when it comes to caring for your car.

Do You Really Need to Change Your Oil Every Few Thousand Kilometers?

One of the most common pieces of advice among drivers is the need to change engine oil every 3,000 miles, or around 4,800 kilometers. While this was valid in the past, modern engines and high quality synthetic oils have changed the game entirely. Today, most vehicles can go between 8,000 and 12,000 kilometers without needing an oil change. Some newer models can even exceed that range before the oil needs replacing. The best recommendation remains to consult your vehicle’s manual, which outlines the correct interval based on the oil type and your driving conditions.

High Octane Fuel? It’s Not Always the Key to Better Performance

Many drivers believe that filling up with premium fuel improves performance or extends engine life. But in reality, high octane fuel offers no added benefits unless your engine is specifically designed to use it. Using premium gas in a car that doesn’t require it only results in unnecessary expenses with no practical return. That’s why it’s always advised to follow the manufacturer’s fuel recommendation for optimal engine performance and protection.

Is It Necessary to Warm Up Your Car Before Driving?

Some drivers still believe that letting the car idle before driving is essential for protecting the engine. But this notion is outdated. Modern engines are built to perform efficiently from the moment they start. All they need is gentle driving during the first few minutes to reach the ideal operating temperature. Letting the car idle for a long time only leads to wasted fuel and increased emissions, with no real benefit.

Don't Trust the Number on the Tire Sidewall: It's Not the Right Pressure

One of the most common mistakes drivers make is assuming that the number printed on the tire sidewall represents the ideal tire pressure. In reality, this number indicates the maximum pressure the tire can safely handle, not the recommended pressure for your specific vehicle. To find the correct pressure, check the label located inside the driver’s door or consult the vehicle’s manual. Maintaining the proper tire pressure not only extends tire life but also improves fuel efficiency and ensures better handling and road safety.

Jump Starting Doesn't Fully Recharge Your Battery

When a car stalls due to a dead battery and is jump started with booster cables, many drivers assume that a short drive will recharge the battery completely. However, fully restoring a drained battery requires much more than just a few minutes of driving, it often takes several hours or the use of a dedicated battery charger. A battery that has been deeply discharged may lose its ability to hold a charge, increasing the likelihood of future breakdowns. It’s usually best to either properly recharge the battery or replace it altogether if it's showing signs of weakness.

Loud Engine Sounds Don’t Equal More Power

Many drivers associate a loud exhaust sound with increased engine performance, believing it's a sign of a powerful, sporty engine. But in most cases, a loud exhaust is the result of a leak or malfunction in the exhaust system, which can harm engine performance. A properly sealed and functioning exhaust system helps optimize fuel efficiency, reduce emissions, and ensure smoother engine operation. If you notice unusual noise from your exhaust, it's best to have the system inspected immediately instead of ignoring it.

Washing Your Car Under the Sun Can Damage the Paint

Washing a car in the heat of the day under direct sunlight might seem convenient, especially for faster drying. However, the rapid evaporation of water and soap can leave behind unsightly spots and streaks on the paint. For the best results, it's advisable to wash your car in shaded areas or during cooler times of the day, like early morning or late afternoon, to achieve a spotless, clean finish without damaging the paintwork.

Don't Wait for an Oil Change to Check Oil Levels

Some drivers neglect checking their engine oil levels and only do so when it's time for an oil change. But oil levels can drop much sooner due to minor leaks or increased consumption by the engine. Regular checks using the dipstick help detect early signs of trouble and prevent serious engine damage caused by insufficient lubrication. Keeping an eye on your oil level is one of the simplest yet most effective ways to preserve your engine's health.

Coolants Are Not One Size Fits All

There's a common misconception that all types of coolant are interchangeable and serve the same function. In truth, each vehicle requires a specific type of coolant with a chemical formulation tailored to its engine components. Using the wrong coolant can cause corrosion, build up of deposits, and reduced cooling efficiency. Always refer to the owner's manual to select the correct type and avoid mixing different coolants, which could compromise engine performance.

Tire Rotation Doesn’t Always Align with Oil Change Timing

Some assume that tire rotation should always happen alongside an oil change, but the two services often have different intervals. Tires wear unevenly due to varying factors like driving style, weight distribution, and road conditions, making regular rotation necessary every 10,000 kilometers or as recommended by the manufacturer. If your oil change interval is around 8,000 kilometers, you may rotate the tires at the same time, but if it's longer, it's wise to follow a separate schedule for tire rotation to ensure even wear and extend tire life.