From the bicycle to the rocket, from the lawn mower to the petroleum drill machine, as long as there is mechanical friction, there is a need for lubricating oil. Today, let’s take a look at several artificial oils and selection methods for automotive engines.
First, let’s first understand the actual significance of the oil label.
Taking this shell oil as an example, S represents this is a gasoline engine oil, n represents the quality level (from A to N, the higher the quality level of the letter) 0W-40 is its performance label. Where W is the first letter of Winter “Winter”. The number of W W represents the low temperature fluidity of the gasoline, the oil is also liquid, when reaching a low temperature, it will begin to crystallize, seriously affect the liquidity, and the higher the number, the higher the low temperature fluidity, the more it can be cold The weather is played under the weather. So even the same car and Hainan Island also choose different oils. 
How much is your winter temperature there, according to this form, can you choose the oil that is best for your local weather? At the same time, it is necessary to change the oil in time when changing the season.
Let us look at the numbers behind W. For engine oil, 100 degrees is the most suitable temperature, more than 125 ~ 130 degree oil performance will drop sharply. The number of ws behind is the viscosity of the oil at 100 degrees. The greater the number, the higher the viscosity, the brighter the oil film formed in the cylinder, and the engine can provide better protection. The disadvantage is that the resistance is increased, increasing fuel consumption, so it is more suitable for the motion performance model of Malaysi.
The turbocharged engine has higher calories compared to the natural intake engine, and it is also recommended to select a higher viscosity motor oil when selecting. At the same time, I should also pay attention to my driving habits. I usually drive gentle riders more suitable for low-label oil, and improve fuel economy, and like fiercely driving more suitable for high-label oil, providing stable pair of protection for engines. 
Simultaneous oil oil is also divided into mineral oil, semi-synthetic oil, and full synthetic motor oil according to the ingredient. Among them, mineral oil is the cheapest, the low purity is low, and the environmental pollution is also relatively large, and the basic replacement period is 5,000 kilometers.
Semi-synthetic oil is the current mainstream, adding mineral oils in artificial chemical manufacturing, with higher prices of mineral oil, stronger lubricity, and the basic sliding cycle is 7500 kilometers.
All synthetic oil is 100% artificial oil, with powerful lubrication performance, and the minimum impact on the environment, the price is also the most expensive, replacement cycle is 10,000 kilometers.
The blood as an engine is very important. About the choice of oil, it is necessary to understand each owner, and combine itself. Good oil choices can effectively reduce engine failure rate, reduce carbon deposit, improve performance, and increase fuel economy.
The above is the basic knowledge and choice of oil, do you understand? About viscosity lubrication may only look at the data, some unimaginable, interested riders can find two iron sheets, dripping in the two iron pieces, adding water, soy sauce, peanut oil, honey, feel different viscosity The different feelings brought by “oil”!