Each car owner is aware of the need to periodically change the fluid. Engine oil, brake fluid, transmission oil and coolant are some of the essential fluids needed to keep things running smoothly. The viscosity of these fluids is an important factor in the effective operation of the car.
What is viscosity and how does it affect the fluids in the car?
The viscosity of engine oil is a measure of the oil’s resistance to flow. It is measured in units known as “viscosity degrees”, and is designated by SAE degrees, which are standards established by the Society of Automotive Engineers.
Keep in mind that the viscosity of engine oil changes with temperature. When the engine is cold, oil is more viscous, which means it flows more slowly. This can be a problem if the oil is very viscous, as it may take time to reach the parts of the engine that need lubrication.
On the other hand, when the engine is hot, it becomes thinner and flows easily. It is important that this change between the two densities occurs because the engine oil must quickly reach the parts of the engine that need lubrication to avoid wear and friction.
The choice of the proper viscosity of motor oil depends on the climate and the type of engine. For example, in colder climates, it is important to choose an oil with a lower viscosity, such as SAE 5W-30 oil, because the oil will be more fluid and will be able to run more smoothly when the engine is cold.
In a hot climate, a higher viscosity oil, such as SAE 10W-40 oil, is the best choice, as the oil will be thicker and provide better protection when the engine is hot.
It is important to note that the choice of engine oil viscosity is not something to be taken lightly. Oil with the wrong viscosity can damage a car’s engine and reduce its useful life. If in doubt about which oil is right for the car, you should consult the owner’s manual or talk to a trusted mechanic.
In addition to viscosity, it is also important to choose a high-quality engine oil that meets the manufacturer’s specifications. These contain additives that can help protect the engine and improve its performance. On the other hand, they may not provide adequate protection, reducing the useful life of low-quality oil engines.
brake fluid viscosity
Another important fluid for the proper functioning of a car is brake fluid. This is necessary so that the system can quickly transmit the force of the brake pedal to the wheels of the vehicle. If the viscosity of brake fluid is too high, it can cause delayed brake response and wear on brake system components.
On the other hand, if it is too low, it can cause a loss of pressure in the system, resulting in poor braking, which is dangerous to the safety of the driver and those around the vehicle.
engine oil viscosity
Engine oil is essential to its proper operation, as it lubricates components and reduces wear. In this case, if the viscosity of the oil is too high, it can result in reduced cold start capability and increased resistance to flow, which can lead to increased wear on the engine. Conversely, if the viscosity is too low, it may reduce wear protection and increase oil consumption.
transmission oil viscosity
This oil lubricates and protects the components of the transmission system in order to properly transmit the power of the motor to the wheels. In this case, if the viscosity is too high, it can increase resistance to flow, which can increase wear on transmission components. On the other hand, if it is low, it can reduce the lubrication and protection capabilities of transmission components, which can lead to premature wear.
viscosity of the coolant
Coolant helps keep the engine at the proper temperature. In the event that the viscosity of the coolant is too high, it can reduce its ability to dissipate heat, which can lead to overheating and damaging components. If the viscosity is too low, the effectiveness of the coolant in absorbing and dissipating heat may decrease, which can lead to engine overheating and eventual failure.
How to choose the right viscosity?
The vehicle manufacturer is the one who determines the proper viscosity for each car fluid, which can be found in the owner’s manual. Many factors come into play, such as engine and transmission design, weather and driving style. It is important to follow the manufacturer’s recommendations and thus choose the fluids that will work best for each of the car’s components.
Viscosity: An important factor in car performance and safety
Finally, a vehicle is made up of various parts that perform a specific function, which is essential for its proper functioning. Some of them, such as the engine, braking system or transmission, require oil or fluid to allow them to perform their functions. The viscosity of these fluids is important for them to function and remain in optimal conditions, something that extends their useful life. In case of doubt, it is always better to check the instruction manual or consult a specialized technical service.