As important as the individual parts and systems under your hood are to the operation of your car, fluids ensure those components continue working problem-free. Unfortunately, leaks can occur. While they might seem harmless, they can place your vehicle in jeopardy if you allow them to persist. These leakages may spring from a broken gasket, worn seal, and similar problems.

In this article, we'll provide an overview of the types of fluids your vehicle needs in order to operate seamlessly. Each can begin leaking. In most cases, the problem begins with a few drops and steadily worsens over time, leading to large repair bills down the road.

Engine Oil

Your car's engine is comprised of a plethora of moving parts. Oil is necessary to prevent those parts from building excess heat and friction, destroying each other in the process. An engine that lacks oil is likely to overheat.

You should be in the habit of checking your oil level at least once a month. That way, you can replenish the oil if the level is low. If you notice a leak directly under your engine, mention it to your mechanic so it can be addressed as soon as possible.

Coolant

Coolant is required to transfer heat from your engine to your radiator and thus, help prevent the engine from overheating. Like oil, coolant can leak. The problem is, leakages can form in a variety of places, making it difficult to locate the source. For example, coolant can leak from a bad seal on the water pump, a worn connection on the radiator, or from any of a number of deteriorating hoses. If left unresolved, your engine will eventually sustain damage.

Check the level of coolant in your radiator once a month (ideally, at the same time you check the oil). If it's low, replenish it and monitor leaks that may have developed. If you find yourself constant
ly replenishing the coolant, have a mechanic find and fix the leak quickly.

Transmission Fluid

Transmission fluid works similarly to motor oil. It provides valuable lubrication for the moving parts; without it, your transmission would begin to experience serious problems. Most of the leaks are due to worn seals and gaskets that deteriorate over the years. When this happens, you'll usually see a reddish fluid directly under the assembly.

A mechanic can usually repair these type of problems without removing the transmission from your vehicle (though every assembly has a slightly different construction). The exception is the front seal. If it develops a leak, the transmission will probably need to be lifted. That will dramatically increase your repair bill.

Steering Fluid

Normally, your vehicle should not use up or "burn" steering fluid. If you check the reservoir and notice the level is low, the reason is usually because a leakage has formed. Look at the ground underneath your car. You'll either see fluid toward the front under the steering pump or near the rear under the steering rack. Depending on the size of the leak, you may be able to postpone repairs by replenishing the steering fluid as needed.

Brake Fluid

When you press down on your brake pedal, fluid travels from the master cylinder to your front and rear brakes. This occurs as the result of hydraulic pressure. The good news is that the fluid rarely leaks because there are few seals throughout the system. The bad news is that the few seals that are part of the system are made from rubber. They can potentially deteriorate with time. As with other fluids, periodically check the level (in the master cylinder reservoir) and replenish it when necessary.

If you keep your vehicle long enough, individual components will eventually fail. However, you can prolong the life of major systems (e.g. engine, transmission, etc.) by having fluid leaks resolved as quickly as possible.