Five Outdated Vehicle Maintenance Tips
Published Apr 15, 2026
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Since their invention in the 1800s, some car maintenance tips have become ingrained in people’s minds, shared over the years, and rarely disputed.
However, not all of this advice remains true. Here's a list of a few outdated vehicle maintenance tips that no longer apply to modern cars.
1. Change your oil every 3,000 miles
Decades ago, when cars were less advanced, an oil change every 3,000 miles was standard practice.
Older engines required more frequent oil changes because they were more prone to seal and gasket leaks. This is significant because when engines have ruptures like this, air and moisture can sneak in and accelerate oil degradation.
Today’s engines have tighter seals and are engineered precisely, allowing them to burn fuel cleanly. Most vehicles run on conventional oil, a refined version of crude oil, which should be changed approximately every 5,000 miles.
Some modern cars run on synthetic oils, which offer better lubrication, more resistance to sludge and debris, and a longer lifespan; therefore, they don’t need oil changes nearly as often. If your vehicle uses synthetic oil, you’ll only need to change the oil every 10,000 to 15,000 miles! 🥳
2. Modern cars don't need maintenance at all
Believe it or not, some drivers still think that newer cars just don’t need regular maintenance. The idea behind this misconception is that modern vehicles are built so well that they’re reliable on their own and aren’t susceptible to breaking down.
While it’s true that today’s cars are optimized for safety and reliability, there’s no such thing as an infallible vehicle. No matter how much faith you have in your car, it’s essential to keep up with routine maintenance.
The bare minimum for car maintenance includes regularly checking your oil and other fluid levels, checking tires for signs of wear and tear, and verifying your brakes are in good condition. If you don’t establish good maintenance habits, you reduce your car’s lifespan and can even put yourself at risk of getting into a crash.
3. Let your car warm up before driving
You may have heard that you should let your car warm up for 10 minutes before driving, but this tip doesn’t really apply to modern vehicles.
This rule comes from the past, when carbureted engines were the norm. This engine type uses a mechanism called a carburetor to mix air and fuel into a combustible mixture that powers the engine. On cold days, these engines sometimes needed additional time to reach the correct fuel-to-air ratio.
Carbureted engines are no longer used in commercially sold cars, although some vehicles still feature them. Now, cars tend to use electronic fuel injection systems instead. These adjust automatically even in low temperatures, so your engine will be ready to go within seconds of starting.
Giving your car time to warm up isn’t just unnecessary. It also burns unnecessary fuel and creates emissions, leading to increased pollution.
4. Wash your car with dish soap
When the time comes to grab a sponge and scrub your car, it can be tempting to grab the same soap you use on pots and pans. This outdated maintenance tip is something your parents or grandparents may have modeled.
Many drivers still believe that dish soap on vehicles is harmless, but car buffs will tell you otherwise. Dish soap is pH-balanced to remove oil, food particles, and grease, which means its acidity or alkalinity can harm the exterior of your car.
Soaps specifically designed for cars have a pH of about 7, making them gentle enough to scrub dirt from your vehicle without stripping wax or damaging the paint.
5. Change your coolant every year
Engine coolant, or antifreeze, is one of the many key fluids that help your car run smoothly. The purpose of coolant is to maintain stable engine temperatures, preventing both overheating and excessive cooling.
Drivers were once instructed to change their antifreeze on an annual basis, but this advice is now considered a relic of the past. Because older coolant formulas were less advanced, coolant used to require more frequent changes. Old antifreeze was made inorganically, and it broke down quickly when exposed to heat and oxygen.
Beginning in the late 1980s, coolant was made using Organic Acid Technology instead. These advanced additives last longer and require less maintenance, thereby extending the lifespan of the coolant. Today, coolant can often last for up to five years, and some can even last up to ten years or 100,000 miles.
Know more outdated maintenance tips?
Share them with us! Find a Transwest dealer near you to share maintenance tips or shop new and used vehicles.
