The role of lubricants in the engine


When the engine is working normally, its internal envir […]

When the engine is working normally, its internal environment is very bad. High-speed friction, high temperature, high pressure, carbon deposits, sludge, and worn metal particles that touch each other on the metal surface are all "dangerous molecules" that affect the life of the engine. The existence of lubricating oil is used to solve or alleviate these problems. In other words, engine lubricating oil plays a role as a "protector."

Qualified lubricating oil can establish a reliable oil film on the contact surface of the relatively moving parts, thus "separating" the parts with high speed relative motion, thus effectively preventing mutual wear between the parts; The flow also helps to dissipate heat from the engine, which reduces engine temperature. In addition, the engine lubricating oil also has the functions of cleaning and cleaning, sealing and leakproof, rust and corrosion prevention.

What is a fully synthetic lubricant?

Lubricating oils generally consist of two parts, a base oil and an additive. At present, the oil on the market can be divided into mineral oil and synthetic oil due to the difference of its base oil (the vegetable oil is not counted because of the scarcity of production). Synthetic oil is further divided into: total synthesis and semi-synthesis. Fully synthetic motor oil is the highest grade.

1/mineral oil type

The mineral oil base oil is extracted from crude oil, that is, after the crude oil is put forward, oil, gasoline, diesel, kerosene, heavy oil, and then the mineral oil base oil is extracted, and finally the bottom is asphalt. Usually, the cost is very low and it is relatively easy to oxidize. Although today's mineral oils are added with various additives to improve performance, the service life is still short.

2/semi-synthetic type

Semi-synthetic oil is a mixture of mineral base oil and synthetic base oil in a certain proportion. Its performance is also between mineral type and fully synthetic oil. It is an ideal transition product of mineral oil to synthetic oil. Compared with mineral oil, its cost is higher, but its oxidation resistance is significantly improved.

3/full synthetic type

The base oil is formulated with only IV and V base oils. It is blended with mineral oil and added with various additives. This lubricant is called fully synthetic or 100% synthetic.

Where is the full synthetic lubricant?

Compared with mineral oil and semi-synthetic motor oil, the synthetic motor oil molecules are arranged neatly, and the ability to resist external "change" is stronger. The ability of heat stability, oxidation resistance and viscosity change resistance is better than mineral oil and semi-synthetic oil. many. The specifics can be summarized as follows:

Excellent overall performance.

Improved fuel economy.

Excellent low temperature performance for fast engine protection at start-up.

Excellent oxidation resistance and thermal stability for high temperature and harsh conditions.

Excellent wear resistance, anti-friction agent formula extends the life of all parts of the engine.

Long-term use of clean carbon to keep the engine clean and extend the oil change period.