It seem that debunking myths has become one of my favorite things to do lately. If you’ve kept up with Dallas GMC Dealer, Freeman Grapevine, you know that I’ve touched on gasoline myths and electric car myths recently. In continuing with this little series I’ve started, I want to share my favorite cars myths of all –maintenance myths. I think these are my favorite because they are the most common. They’re also the most important because you may think you are doing what’s best for your car when in reality, you might be compromising your safety and your wallet. That being said, let’s not waste anytime.
Myth: Engine oil should be changed every 3,000 miles.
Reality: Despite what oil companies and quick-lube shops often claim, it’s usually not necessary. Stick to the service intervals in your car’s owner’s manual. Under normal driving conditions, most vehicles are designed to go 7,500 miles or more between oil changes. Changing oil more often doesn’t hurt the engine, but it can cost you a lot of extra money. Automakers often recommend 3,000-mile intervals for severe driving conditions, such as constant stop-and-go driving, frequent trailer-towing, mountainous terrain, or dusty conditions.
Myth: Inflate tires to the pressure shown on the tire’s sidewall.
Reality: The pounds-per-square-inch figure on the side of the tire is the maximum pressure that the tire can safely hold, not the automaker’s recommended pressure, which provides the best balance of braking, handling, gas mileage, and ride comfort. That figure is usually found on a doorjamb sticker, in the glove box, or on the fuel-filler door. Perform a monthly pressure check when tires are cold or after the car has been parked for a few hours.
Myth: If the brake fluid is low, topping it off will fix the problem.
Reality: As brake pads wear, the level in the brake-fluid reservoir drops a bit. That helps you monitor brake wear. If the fluid level drops to or below the Low mark on the reservoir, then either your brakes are worn out or fluid is leaking. Either way, get the brake system serviced immediately. You should also get a routine brake inspection when you rotate the tires, about every 6,000 to 7,000 miles.
Myth: Flush the coolant with every oil change.
Reality: Radiator coolant doesn’t need to be replaced very often. Most owner’s manuals recommend changing the coolant every five years or 60,000 miles. Of course, if the level in the coolant reservoir is chronically low, check for a leak and get service as soon as possible.
Myth: After a jump-start, your car will soon recharge the battery.
Reality: It could take hours of driving to restore a battery’s full charge, especially in the winter. That’s because power accessories, such as heated seats, draw so much electricity that in some cars the alternator has little left over to recharge a run-down battery. A “load test” at a service station can determine whether the battery can still hold a charge. If so, some hours on a battery charger might be needed to revive the battery to its full potential.
Myth: Let your engine warm up for several minutes before driving.
Reality: That might have been good advice for yesteryear’s cars but is less so today. Modern engines warm up more quickly when they’re driven. And the sooner they warm up, the sooner they reach maximum efficiency and deliver the best fuel economy and performance. But don’t rev the engine high over the first few miles while it’s warming up.
Myth: Dish washing and laundry detergents make a good car wash.
Reality: Detergent can strip off a car’s wax finish. Instead, use a car-wash liquid, which is formulated to clean without removing wax.
Source: Consumer Reports
Heard of at least one of these before? I knew it. I’m sure some of you may be in shock right now realizing that all of you’ve known about DIY car maintenance has been wrong, but don’t fret Freeman Grapevine has you totally covered. You should never hesitate to give us a call with any car maintenance questions or any questions about cars in general. After all, we want to ensure your car lives the longest and healthiest life that it can.