Content: Most drivers want to do the right thing for their vehicles, but there is a lot of conflicting advice out there. Friends, family, and even social media can leave you wondering what actually keeps your car running safely on American roads and what is just an old myth that will cost you time and money. Let’s walk through some common beliefs we hear in U.S. repair shops every day and talk about what really matters for your car.

1. Oil must be changed every 3,000 miles

This rule came from older engines and older oils, and it stuck. Most modern vehicles, especially those built in the last decade, can safely go longer between changes when you use the oil grade listed in the owner’s manual. Some even have built-in maintenance reminders. Instead of following a sticker or a rumor, follow the schedule in your manual and consider your driving habits. Stop-and-go city traffic or frequent towing might mean more frequent service, but you usually do not need to rush in at 3,000 miles anymore.

2. Premium gas always makes your car run better 

If your vehicle is designed for regular fuel, using higher octane will not magically clean the engine or boost power in a noticeable way. You are mainly just paying more at the pump. However, if your owner’s manual says mid-grade or premium is required, you should stick with that. Modern engines are carefully tuned, and using the recommended fuel grade is more important than trying to “treat” your car with something it was not designed to use.

3. You only need insurance for big crashes 

In the U.S., even a low-speed fender bender in a parking lot can lead to body work, paint, and sensor calibration for modern safety systems. Collision or comprehensive coverage, depending on your policy, can make the difference between an affordable repair and a major out-of-pocket surprise. It is worth reviewing your coverage once a year, especially if your car is newer or still has a loan. Ask how deductibles, rental coverage, and glass coverage would apply if you needed repair work after a storm, a theft, or a minor mishap.

4. If the car still drives, the damage can wait 

Maybe you hit a pothole on a city street, your steering feels a little off, but the car still moves. Or you bump a curb and notice a small vibration on the highway. Many drivers keep going, hoping it will sort itself out. In reality, early checks on alignment, suspension parts, and tires can prevent uneven wear and more serious issues. A short visit to a local shop can catch problems while they are small.

5. A check engine light always means an expensive repair 

That light can come on for many reasons, from a loose gas cap to a failing sensor. Waiting too long can turn a small problem into a bigger one, but the light itself is not a verdict. In most American shops, technicians use scan tools to read the code and then perform basic tests. Often the first step is an honest explanation of what the code means and what can happen if you delay.

6. Online advice beats a trusted local shop is another modern myth

Video tutorials and forums can offer helpful tips, but they do not see your specific car, your driving conditions, or your maintenance history. A dependable neighborhood shop in your community gets to know your vehicle over time. That history helps them give practical guidance, like when it really makes sense to replace brakes or how soon you should plan for new tires. In a world full of car care noise, steady, relationship-based advice still works best.

Car care myths spread fast, but steady, real-world experience always wins. When you focus on clear information, regular maintenance, and thoughtful choices about repairs and insurance, you protect your car and your peace of mind. The myths will keep circulating, but what actually works will keep you confidently on the road.