Car Service 101: Breaking Down All of the Fluids

Posted July 12, 2023

Routine maintenance is essential to keep your car running correctly. However, it can be more complex than taking your vehicle to an auto shop yearly. In between those appointments, you’ll need to check your fluids. It’s helpful to know what those fluids do, too. This article will help you understand the basics.

Engine Oil

The oil in your car is like the blood in your body. It circulates throughout the engine to lubricate parts, helps dissipate heat, and more. Over time, engine oil can become dirty, and the filter it goes through can become filthy. That’s why it typically needs to be changed every 3,000 to 5,000 miles. When checking your oil, the car has to be cool. That means letting your car stay off for 20 to 30 minutes before checking it.

Transmission Fluid

This vital fluid helps lubricate the transmission system, ensuring that your car can shift smoothly from one gear to the next. Truck of Mine says you must change your car’s transmission fluid every 30 thousand to 60 thousand miles. Most modern vehicles have a closed transmission system that needs to be flushed when the transmission fluid is changed. This system requires an auto shop with the necessary tools to change the transmission fluid. When checking this fluid, the car should be running.


Antifreeze is also known as coolant. This helps regulate the temperature in the engine so the engine block doesn’t get too hot. In hot weather, it ensures the car won’t overheat. In cold weather, it guarantees the engine block won’t freeze, which can ruin the engine. You can check the coolant level by looking into the antifreeze overflow. Pay attention to the color of the antifreeze. Some cars take a green kind, while others take an orange kind. You cannot mix and match types of antifreeze. Instead, avoid ruining your car by always using the right color when you’re low.

Brake Fluid

Usually, you’ll only run low on brake fluid if a problem in the system causes a leak. However, running out of brake fluid while driving can be a severe problem. Check your brake fluid weekly when you check your other fluids. If you notice it is low, it’s essential to schedule an appointment with an auto shop to determine the problem. Have your brake fluid changed according to the instructions in the owner’s manual. These instructions tend to vary depending on the vehicle.

If you notice your fluids running low, it’s important to visit an auto shop for an accurate diagnosis. Contact Real Tech Auto & Truck Repair to schedule an appointment today.

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