How to choose the right lubricant for your engine

1. Lubrication and wear reduction: between the piston and the cylinder, between the spindle and the bearing, there is a fast relative sliding, to prevent the parts from wearing too quickly, it is necessary to establish an oil film between the two sliding surfaces. An oil film of sufficient thickness separates the surface of the relatively sliding part to reduce wear.

2. Cleaning and cleaning: good engine oil can bring carbide, sludge and wear metal particles on the engine parts back to the oil tank through circulation, and wash out the dirt generated on the working surface of the parts through the flow of lubricating oil.

3. Cooling and cooling: The oil can bring the heat back to the oil tank and then dissipate it into the air to help the water tank cool the engine.

4. Sealing and leak-proof: The oil can form a sealing ring between the piston ring and the piston to reduce gas leakage and prevent external pollutants from entering.

5. Shock absorption and buffering: When the pressure of the engine cylinder port rises sharply, the load on the piston, piston chips, connecting rod and crankshaft bearing is suddenly aggravated, and the load is transmitted and lubricated by the bearing, so that the impact load bears plays a buffering role.

6. Anti-rust and anti-corrosion: lubricating oil can be absorbed on the surface of parts to prevent water, air, acidic substances and harmful gases from contacting parts.

Under the condition of ensuring lubrication, passenger car Xiaolan should use lubricating oil with low viscosity according to the temperature range at the time of use under the premise of ensuring lubrication. However, for engines with serious wear and large clearances, lubricating oil with slightly higher viscosity can be appropriately selected.

Here are a few things to consider when choosing the right oil for your vehicle:

Viscosity grade recommended by the vehicle manufacturer: This is usually stated in the vehicle owner's manual, e.g. 5W-30 or 10W-40, etc.

API Service Classification: API is the American Petroleum Institute standard that classifies engine oils into categories. You should choose a service category that at least meets the minimum API service recommended by the vehicle manufacturer.

Additives: Some oils are infused with additional ingredients such as detergents, antioxidants, and friction modifiers.

Synthetic or semi-synthetic: Synthetic motor oils offer higher performance and longer service life than conventional motor oils.

When purchasing motor oil, check the instructions on the product label to make sure it meets your vehicle's requirements and replace it according to the vehicle manufacturer's recommendations. Additionally, to ensure a proper oil change, it's best to read the vehicle owner's manual and follow the instructions in it before changing.

<> "In fact, choosing engine oil is not the most expensive and suitable, but should be based on the characteristics of the car engine, as well as the usual driving habits, choose the right oil is the most suitable. First of all, it is possible to classify the oil used in the winter and the oil used in the summer.

The engine oil suitable for use in winter is based on the primary low-temperature viscosity grade, which ensures that the low-temperature oil performance is very good. Try to choose a small value for the high-temperature viscosity grade, so that the high-temperature viscosity of the engine oil is as low as possible. In this way, the low temperature will not lead to high viscosity of the oil and poor cold start performance.

Summer temperatures are high, so there is no need to choose a better low-temperature viscosity grade. The engine temperature is very high. For high viscosity grades, you can also choose some high-viscosity engine oils, which can ensure that the engine has enough oil film strength at high temperatures and ensure the establishment of oil film for engine parts.

It depends on your car model, generally speaking, there will be recommendations in the car's manual, and you can buy it according to this.

If we want to buy lubricating oil, we must buy big brands, because big brands are very quality-guaranteed. And when buying lubricating oil, you must pay attention to the details and don't bring unnecessary trouble to yourself. You can also find a very professional person when buying lubricants, because this way you can not be deceived.

But after buying it back, we must find a professional to help us deal with it, because we can't solve it ourselves, so we must find a professional.

I think we should choose some good quality lubricating oils, and we should also choose some more cost-effective lubricating oils, because good lubricating oil can play a good role in protection, and can also improve the service life of the engine, so it is very important.

The choice of oil should be based on the model and environment. If it is in the south, then it is okay to use single-grade oil, that is, etc. If you are in the north or in areas with large temperature differences, you need to choose multi-grade engine oil, such as 15w w-30 and so on.

According to the vehicle engine, gasoline engine oil or diesel engine oil is selected, and large vehicles or cars in the current domestic situation generally need to choose diesel engine oil above CD level and steam engine oil above SE level. If the model is better, it is better to choose a higher level, preferably the products of famous foreign companies, such as Mobil, Shell, Esso, etc.

Be sure to choose a big brand, and be sure to choose a fully synthetic one, so that the performance will be better.

Engine oil reduces friction, cools the engine, lubricates components, reduces friction between components, accelerates, eliminates wear, eliminates iron filings, and reduces noise. 1.Viscosity.

The viscosity of engine lubricant is an important condition to ensure the normal operation of the engine. Viscosity and temperature are an important indicator of engine lubricants, and it is not necessary to choose the right engine oil in different regions and at different temperatures. 2.

Clean and dispersed. Poor sealing of piston rings and cylinder walls, and too many heavy components in fuel and oil can cause carbon deposits, varnish and sludge when the engine is operating at high temperatures, low temperatures and low speeds. 3.

Antioxidant properties. The oxidation resistance of internal combustion engine lubricants refers to the resistance to the influence of atmosphere (oxygen) in a specific environment, so that their performance will not be permanently changed. 4.

Corrosion resistance. The corrosion resistance of engine lubricants refers to materials that are resistant to corrosion. Lubricating oil is a liquid or semi-solid moisturizing lubricant used in various automobiles and mechanical equipment with lubricating effect.

A layer of lubricating film is formed between the moving parts, which reduces the friction of the moving parts and reduces the wear of the parts, so as to achieve the purpose of preventing dry friction. Viscosity refers to the viscosity of the fluid, and when the fluid is affected by an external force, shear and internal friction are produced, which is called viscosity. Purifying effect.

When the engine is running, the circulation of the engine oil will wash and clean the friction surface, bring the carbon deposits and other impurities formed by abrasion and combustion back into the crankcase, and then filter it with the oil filter, in this process, the dust in the air and the gelatinous matter in the oil will precipitate, so that no impurities will enter the oil and form abrasive particles.

Cars have gradually entered our lives, people usually live under too much pressure, generally choose rest days or holidays to travel, although China's transportation development has gradually entered the forefront in the world, but there are still many inconveniences, so many people will choose to buy their own cars, so that the development of the automotive industry is growing day by day. As long as it meets the manufacturer's grade requirements and viscosity requirements, of course, the higher the grade, the better, and the turbocharged engine must be protected more comprehensively with fully synthetic engine oil, and the maintenance interval can be extended. The most important thing is that you must use ** engine oil, not counterfeit brand-name engine oil.

First of all, we can choose the engine oil by the type of engine, for the current car engine, in most cases there are basically two, namely naturally aspirated engine and exhaust gas turbocharged engine, so the question is, how to choose different engine types for engine oil? First of all, the exhaust gas turbocharged engine due to the existence of the exhaust gas turbocharger, will cause the engine to work at a higher temperature than the naturally aspirated engine, and the pressure in the cylinder will be greater, so from this point we can understand that the exhaust gas turbocharged engine must choose higher requirements, here it is recommended that you try to choose synthetic oil, because synthetic oil has better stability, for the exhaust gas turbocharged engine has better protection.

Another way to choose an engine oil is that we can use the original special engine oil, or the oil recommended in our car maintenance manual, which is specifically required in the general maintenance manual or instruction manual. Because the oil recommended by the original factory is generally selected in accordance with the technical parameters of this engine, at least in the selection of oil label, the oil recommended in our maintenance manual will not be wrong, there is no more suitable than this.

It depends on the utilization rate of your car, the usage rate is high and more than 1,000 kilometers per month, use high-grade engine oil, so that you can extend the time and reduce the number of maintenance. On the contrary, if the usage rate is low, less than 5000 kilometers will be used for half a year, so the engine oil will be used at a lower level. As for which is more cost-effective, it depends on the ** of the engine oil.

The highest grade of engine oil is MJ grade, followed by SJ grade, and fully synthetic engine oil is the most expensive, semi-synthetic engine oil, mineral engine oil is cheap, etc., there are more brands you can choose to buy at the right price.

Whether it is semi-synthetic engine oil or fully synthetic engine oil, it has its own label, which many car owners will also notice when changing engine oil, such as 5w-30 or 5w-40. These designations represent the oil's different frost resistance and high temperature viscosity. The number before w minus 35 represents the minimum temperature environment that the oil can ensure the normal start of the vehicle, and the later number represents the viscosity of the oil in the high temperature environment, the higher the number, the more viscous.