Many acquaintances have a headache about changing oil. If you are not a "good boy" who insists on using original oil, otherwise every time you encounter different brands and types of oil, you will definitely fall into "difficulty of choice" . Should you choose an international brand or a niche label? Full synthetic or semi-synthetic? I always feel that it is not worth choosing expensive one, I am afraid that it will damage engine if I choose cheap one. So, how to choose right engine oil for your car, that's what we'll talk about today.
When choosing a brand, you first need to find right range based on model and price of your car. For luxury brands, expensive imported cars and models over 250,000 yuan, it is best to choose oil from four main brands (Shell, Castrol, Mobil, Total), for sports or high-performance cars, it is recommended to purchase according to specified brand and model in service manual . As a general rule, unless a manufacturer has specific requirements for family cars in 100,000 range, there is nothing wrong with choosing domestic Kunlun, Great Wall, and other affordable brands.
If you choose according to advantages of each brand, Shell focuses on cleaning ability and quietness, friends who drive German cars or turbocharged models can focus on consideration. The protective effect of Castrol is relatively good, and it is suitable for friends who drive aggressively. Mobil is a representative brand of high performance motor oil and many high performance vehicles are designed to use Mobil motor oil. Total is known for its durability and is exclusive oil for most French brands. Domestic brands are mostly economical.
How to choose type of engine oil?
In addition to choosing a brand, oil model is another very important guideline when choosing an oil. However, many people have almost zero knowledge in this field. They mainly choose by product promotion of engine oil manufacturer. In fact, we can effectively select engine oil suitable for our car by several parameters of engine oil itself.
According to oil label
The oil label is sequence of numbers "5W-40" on oil bottle. The number before W indicates low temperature fluidity of oil. The smaller number, more suitable it is to use. in cold weather. The number after W represents viscosity of oil at 100°, and larger number, more suitable it is for high temperature conditions.
Engine oil quality class can be divided into grades SG, SJ, SL and SM (S = gasoline engine, C = diesel engine).
By type of oil
Common motor oils on market can be divided into three categories: mineral oil, semi-synthetic oil and fully synthetic oil. Among them, best quality is full synthetic oil. Of course, its price is also most expensive. The most cost-effective is semi-synthetic motor oil, and there are quality motor oils that can compete with full synthetic motor oil. oil in semi-synthetic engine oil. As for mineral oil, it is not recommended, although it is cheap, but its characteristics and quality are unsatisfactory.
How often should oil be changed?
This is also an eternal problem. As for how long to change oil, we can only say that it varies from person to person, or from 4S to 4S. Some 4S shops require maintenance every 3-5000 km, otherwise, if you do not go there, it will be considered out of warranty. As for such a short cycle, I suggest you use semi-synthetic motor oil. If you are not worried about going out of insurance, and engine condition is normal (no long high-speed driving, no long trekking), and air quality is normal (no long sandstorms, smog), then you can use a fully synthetic engine oil for about 10,000 km mileage Change, mineral oil 5000 km, semi-synthetic oil intermediate values.