How to use lubricating oil and where to apply it?

The oil replacement cycle also depends on the quality, and the high-quality engine oil can even be replaced later when the specified replacement cycle is reached, and the poor quality may have to be replaced in advance. The car used the original semi-synthetic engine oil to run more than 4,000 kilometers at most, and it couldn't hold up 5,000 kilometers. Now the G T magic red engine oil change cycle is 15000 km, because the power is too good, occasionally forget to go to maintenance, 10,000.

There have been cases where 6 or 17,000 have been replaced, and there is no problem with the engine.

Good quality engine oil does not need to add additional additives, with liquid molybdenum oil anti-wear effect is particularly good, I am now using g t magic red engine oil, liquid molybdenum anti-wear effect is very good, to the engine to play a good role in protection. The car is also very quiet to drive, and GT oil is used all the time.

Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts, mainly playing the functions of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering.

It is mainly applied between two objects that are in relative motion.

When the engine is running, if some friction parts are not properly lubricated, dry friction will occur. Practice has proved that the heat generated by dry friction in a short period of time is enough to melt the metal, causing damage or even jamming of the parts (many cars with water or oil leakage have failures such as pulling cylinders and holding axles, which is the main reason). Therefore, the friction parts in the engine must be well lubricated.

When the lubricating oil flows to the friction part, it will adhere to the friction surface to form a layer of oil film, reducing the resistance between the friction parts, and the strength and toughness of the oil film are the key to its lubrication effect. However, the amount should not be too large, because when the amount is too large, the resistance of the square relationship will be generated, which will have a great impact on the speed, so special attention should be paid to the dosage.

Identification

1. Oil flow observation method: take two measuring cups, one of which holds the lubricating oil to be checked, and the other is empty on the table, hold the measuring cup full of lubricating oil 30-40 cm away from the table and tilt it, so that the lubricating oil slowly flows into the empty cup and observes its flow. The lubricating oil flow is slender, uniform and continuous; If the flow rate fluctuates fast and slow, and sometimes a large piece of water flows, it means that the lubricating oil has deteriorated.

2. Hand twisting method: twist the lubricating oil between the thumb and index finger and grind repeatedly, and the better lubricating oil has lubrication, less grinding debris and no friction; If you feel a large friction sensation such as sand between your fingers, it means that there are many impurities in the lubricating oil and can no longer be used, and the lubricating oil should be replaced with a new one.

3. Lighting method: On a sunny day, use a screwdriver to lift up the lubricating oil, at an angle of 45 degrees with the horizontal plane, and observe the oil droplets against the sunlight. Under the light, it can be clearly seen that there is no abrasive debris in the lubricating oil, which is good; If there is too much abrasive debris, it should be replaced.

Fourth, the oil drop trace method: take a clean white filter test paper, drop a few drops of oil, after the lubricating oil leaks, if there is black powder on the surface, there is a sense of blockage when touched by hand, it means that there are many impurities in the lubricating oil, good lubricating oil has no powder, dry and smooth to the touch, and the traces are yellow.

The lubricant is used as follows: unscrew the cap, squeeze some (bean-like stool is enough) in your hand, blend the lubricant in your hand and apply it to the area that needs to be lubricated. Lubricating fluid is a lubricating medium used to reduce the frictional resistance of the friction pair and slow down its wear.

The lubricating fluid can also play a role in cooling, cleaning and preventing contamination of the friction pair, and in order to improve the lubricating performance, suitable additives can be added to some Runyedenan slip agents. When selecting lubricating fluids, it is generally necessary to consider many factors such as the movement of the friction pair, the material, the surface roughness, the working environment and working conditions, and the performance of the lubricant. Lubricant is a substance used to lubricate, cool and seal the friction part of machinery, which is divided into oily liquid lubricating oil, greasy semi-solid grease and tung solid lubricant.

The lubricant can play a role in cooling, cleaning and preventing pollution, and most of them are distributed to the parts that need to be lubricated through the lubrication system, which has the advantages of good cooling performance, good permeability and low environmental pollution.