Fluids and Lubrication
By keeping car fluids at their proper levels, a vehicle is kept in good working order. Fluids are essential to the smooth operation of many of a car’s systems including the engine, brake system and transmission. Letting them drop below the fill line or, worse yet, dry out can be a recipe for disaster. While many car repairs require a skilled professional or a knowledgeable do-it-yourselfer, maintaining the levels of essential car fluids such as motor oil, brake fluid, automatic transmission fluid and coolant is easy and possible for even the most automotive repair-challenged drivers. Consider the following seven car fluids and their importance to a car.
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- Motor Oil: Motor oil is the most important fluid in every car with an internal combustion engine. Oil lubricates the moving parts in a car engine’s crankcase, preventing the high heat and friction that results during engine operation from destroying the pistons, valves and other components. Without oil, a running engine will seize up in a short time, making the engine virtually unusable.
- Brake Fluid: Brake fluid is by far the most important car fluid in terms of passenger safety. A car’s brake line system is a fully-sealed network that uses hydraulic pressure to control the car’s ability to stop. When a driver presses down on the brake pedal, the brake fluid compresses, transferring the hydraulic force to the pads and shoes that cause the friction necessary to stop the vehicle. If brake fluid leaks or if too much air gets into the brake line, a car’s ability to stop will be compromised.
- Coolant: Coolant is most commonly a 50/50 combination of water and specialized radiator coolant. In colder climates this ratio will lean more heavily towards coolant. Coolant is a heat transfer fluid. It cycles around a running engine, collecting heat as it does and returns it to the radiator. From there, it is transferred to the air. Without proper coolant levels, a car will quickly overheat and be inoperable.
- Transmission Fluid: Transmission fluid is reddish in hue and usually does not have to be checked by a car owner. Similar to motor oil, transmission fluid cools and lubricates the inner parts of the transmission, ensuring that the engagement of the car’s system of gears works without a hitch.
- Power Steering Fluid: This fluid, pressurized by a small hydraulic pump powered by the engine, helps to make turning a car easier. When working at proper levels, power steering fluid increases the ability of the steering mechanism to direct the tires.
- Battery Fluid: Cars with maintenance-free batteries don’t require checking the battery fluid. Other car batteries, however, must have their individual cells refilled from time to time. Fill up each cell to the bottom of the fill line with distilled water.
- Windshield Wiper Fluid: While this is a non-essential fluid in terms of a car’s ability to operate and stop, windshield wiper fluid provides a fast means of clearing the windshield of dust, bug residue and other particles while driving. The fluid is basically liquid soap and is very easy to maintain.