Large-viscosity engine oil is better for vehicle protection? There are still people who believe this statement! Owners of high-viscosity engine oil must not do this, and today's article tells you the harm of choosing engine oil with excessive viscosity.
Many people don't know that the viscosity of engine oil refers to the friction inside the engine when it is working and flowing inside. For example, when a car starts cold in winter, a car with 0W20 will be easier to start than a car with 10W40. To put it simply, the number in front of W represents the flow capacity of the oil in the low temperature state, the smaller the number, the more it can adapt to the low temperature environment, and the better the fluidity, and the number behind the W represents the viscosity index in the high temperature state, the larger the number, the more viscous the oil will be.
What happens if a car is filled with high-viscosity oil?
First of all, oil viscosity can affect fuel consumption. The high resistance of viscous oil will cause higher frictional resistance to the operation of the internal parts of the engine, so the fuel consumption will increase.
Secondly, excessive oil viscosity increases the wear and tear of the engine when the car is started. When the engine does not start for a period of time, the oil originally attached to the parts will flow back to the oil pan, so the parts lack enough oil, if the oil viscosity is large, the flow is slow, the oil pan can not lubricate the surface of the parts in time, it is easy to cause dry friction, some car owners hear a lot of noise when starting the car, it may be the sound of the friction of the parts. This is very harmful to the engine.
Third, the oil viscosity is too large, and the heat dissipation effect is not good, which may cause the engine temperature to rise, the rubber parts to deform at high temperature, and the engine to alarm at high temperature.
Therefore, it is not a good thing to choose engine oil with too high viscosity, and paying attention to Dihang lubricants to help you match the right oil viscosity is the right way to maintain your car!