Taking care of your car is essential for its performance and longevity, yet many of us rely heavily on mechanics for tasks we could handle ourselves. While professional help is necessary for some situations, there are plenty of car maintenance secrets mechanics do not advertise. This is usually because these tricks can save you time, money, and headaches, and that is bad for their business.
Here’s a fresh look at 13 car maintenance tips that could change how you care for your vehicle, and help you get greater millage out of that car that your mechanics would definitely not tell you.
1. Reset the Maintenance Required Light on Your Own
When the maintenance required light illuminates your dashboard, it’s usually nothing alarming. Most of the time, it’s just a routine nudge for an oil change. Instead of heading straight to the dealership, check your car’s manual or online resources to learn how to reset the light yourself.
For more serious issues, consider investing in an OBD2 scanner, a device that connects to your car to diagnose problems. These tools, priced around $30–$40, give you insights into what’s happening under the hood. Whether it’s a loose gas cap or a more critical engine issue, you’ll have the information to make informed decisions.
2. Bleed the Brake System During Brake Pad Replacement
When replacing brake pads, you might be tempted to compress the caliper without thinking twice. However, this can push old, contaminated brake fluid back into sensitive components like the ABS module, leading to potential damage. By opening the bleeder valve during this process, you prevent that fluid from re-entering the system and even flush out some of it in the process.
Pro tip: Always ensure the master cylinder remains full during this procedure to avoid introducing air into the brake lines.
3. Don’t Fall for Additive Hype
Gasoline engines generally don’t need fuel additives, as modern fuels are already enhanced with detergents and performance boosters. However, there are exceptions:
- Diesel engines benefit significantly from additives, especially in cold weather. These can prevent fuel gelling and keep injectors clean.
- Older gasoline engines may see performance improvements from additives like Seafoam or Techron, especially if they’ve been running on lower-quality fuel.
The key is understanding your engine’s needs and not getting swayed by marketing gimmicks.
4. Low Heater Output? Check the Coolant
This is one of those car maintenance secrets your mechanic wouldn’t like to tell you for obvious reasons. If your car heater is blowing lukewarm or cold air, low coolant levels might be the culprit. Coolant is essential not only for engine temperature regulation but also for heating your car in cold weather. Simply pop the hood, check the coolant reservoir, and top it off with the recommended fluid if needed. This simple fix could save you from freezing drives in the winter. And also save you money and time you’d have used to take it to the shop.
5. Choose the Freshest Car Battery
Did you know that car batteries lose life even while sitting unused? Always check the manufacturing date when buying a new one; a battery less than a month old will deliver better performance. Avoid large retailers where stock might sit on shelves for extended periods, and consider charging the battery for 1–2 hours before installation to ensure it’s fully ready to power your vehicle.
6. Regularly Inspect Your Spark Plugs
Spark plugs might be small, but they’re integral to your car’s performance. Modern plugs can last up to 100,000 miles, but waiting that long to inspect them isn’t wise. Pull one out periodically to check for wear, such as a worn electrode or excessive carbon buildup. These signs could lead to misfires, sluggish acceleration, or reduced fuel efficiency. Replacing your spark plugs with the manufacturer-recommended type ensures smoother starts and optimal combustion.
7. Stop Overfilling the Gas Tank
It might feel satisfying to top off your gas tank, squeezing out every last drop, but overfilling can cause problems. Excess fuel can spill or damage the vapor recovery system, which is designed to reduce harmful emissions. When the pump nozzle clicks off, take it as a clear signal to stop. This car maintenance secret can fly under the radar because not a lot of people actually consider it.
8. Don’t Underestimate the Air Filter
Your engine’s air filter is like its lungs—it needs clean airflow to function efficiently. A clogged filter can reduce fuel economy and strain your engine. Most filters should be replaced every 12,000–15,000 miles, but if you frequently drive on dusty roads, check it more often. Swapping out a dirty air filter is one of the easiest DIY maintenance tasks.
Related Content: K&N Air Filters Put to the Test: Are the Performance Gains Worth the Cost?
9. Keep Tabs on the PCV Valve
The Positive Crankcase Ventilation (PCV) valve is a small but critical component of your engine. It regulates the gases in your crankcase and prevents pressure buildup. If it becomes clogged, it can lead to increased oil consumption, rough idling, and even sludge buildup in the engine. Testing your PCV valve is simple: remove it, shake it (a good valve rattles), and check airflow. Replacing a faulty valve costs as little as $20–$40 but can save you from expensive engine repairs.
10. Stick to an Oil and Transmission Fluid Schedule
Your car’s fluids are its lifeblood and this vehicle maintenance secret is one you should not toy with. Using high-quality synthetic oil can extend the time between changes (up to 7,500 miles for many vehicles), but be sure to follow your manufacturer’s recommendations.
Transmission fluid is equally important. Replace it every 30,000–60,000 miles, depending on driving conditions. If you’re frequently stuck in traffic or haul heavy loads, consider changing it sooner to keep your car shifting smoothly.
11. Maintain the Right Tire Pressure
Tires are often overlooked, but proper inflation is critical for fuel efficiency, safety, and longevity. Tires lose about 1 PSI per month, so check pressure regularly using a reliable tire gauge. Underinflated tires wear out faster and increase the risk of blowouts, while overinflated tires reduce grip and lead to uneven wear. Rotate your tires every 5,000–8,000 miles to maximize their lifespan. This car maintenance secret should go without saying. You can get a reliable gauge on amazon or in any hardware shop near you.
12. Don’t Neglect Brake Fluid
Brake fluid often flies under the radar, but it’s vital for your car’s braking system. Over time, it absorbs moisture, which can lead to corrosion and reduced performance. Check the fluid level periodically and flush it every 2–3 years to keep your brakes responsive and safe.
13. Inspect Belts and Hoses for Damage
Belts and hoses may not seem glamorous, but they play a vital role in your engine’s operation. Check belts for cracks, fraying, or shiny spots, and inspect hoses for bulges, leaks, or soft spots. Replacing these parts early can save you from costly engine repairs down the line.
Final Thoughts
Caring for your car doesn’t have to be complicated or expensive. By incorporating these car maintenance secrets and tips into your routine, you’ll avoid unnecessary repairs, improve performance, and extend your vehicle’s lifespan. Most importantly, you’ll gain confidence in handling basic car care.
Start small whether it’s checking your air filter, inspecting your spark plugs, or investing in an OBD2 scanner. Each step brings you closer to becoming a more empowered car owner. Safe driving!
