Category: Business/Financial Management>>Finance and Taxation

Analysis:

morale/CPSJ

Castrol Company Series Fully Synthetic Motor Oil:

Castrol syntec SL 5W-50 (full) 110 17.5 175

Castrol Super Racing 0W-40 (full) 73.6 12.9 177

Castrol Super Racing 5W- 50 (all) 114.5 18.9 ---

SAE is the English abbreviation of the Society of Automotive Engineers, and the SAE grade represents the viscosity grade of the oil. SAE30 and SAE40 are single-grade oils, while SAE10W-30 and SAE15W-40 are multi-grade oils. Among them, the smaller the number in front of "W" indicates the lower the low-temperature viscosity, and the better the protection ability of the engine during cold start; the number after "W" is an indicator of the high temperature resistance of the engine oil. Taking Shell Helix Super Motor Oil as an example, the most typical data is SAE10W-40.

API is the abbreviation of the American Petroleum Institute, and the API grade represents the classification of engine oil quality. It uses simple codes to describe the engine oil's ability to do its job.

API engine oil is divided into two categories: "S" series represents gasoline engine oil; "C" series represents diesel engine oil; when the letters "S" and "C" exist at the same time, it means This engine oil is suitable for gasoline and diesel engines. If "S" comes first, it is mainly used for gasoline engines. On the contrary, it is mainly used in diesel engines.

With each letter from "SA" to "SJ", the performance of the oil will be better than the previous one, and there will be more additives in the oil to protect the engine. The further back the letters are, the higher the quality level. Among international brands, most engine oil grades are SF or above. For example, Shell Helix Plus (Shell Helix Plus) is APISJ grade, while Shell Helix Red Motor Oil (Shell Helix Red Motor Oil) is APISG grade, which means that the quality level of Extra Helix is ??higher than that of Red Helix.

I recommend using major brands of engine oil products, such as: Mobil, BP, Castrol, Shell, Total, Esso, Great Wall, Uni-President, Kunlun. . etc. .

It is strongly not recommended to use special engine oil. They are all OEM products, with low quality and high price! Of course, if you don’t have a high-quality brand of engine oil, you have no choice but to choose it

In addition to the trademark, production company name, oil product and unique name, the oil drum also has international specifications and models, which are composed of English letters.

What do they mean?

Usually you can see the two letters API and SAE on the oil tank of the engine oil product. The meanings of the two letters are as follows:

API: is the abbreviation of the American Petroleum Institute, and the engine oil classification system. For gasoline engine oil and diesel engine oil, the American Petroleum Institute divides gasoline engine oil into several grades: SA, SC, SD, SE, SF, SG, SH, and SJ. The further the letters are arranged, the higher the quality grade, which means the better the protection for the engine. good. SJ grade is currently the highest grade of gasoline engine oil in the world. The grade specifications of diesel engine oil from low to high are CA, CB, CC, CD, CE, CF, CF-4, CG-4, but the same engine oil can meet the quality grades of gasoline engine oil and diesel engine oil at the same time, such as API CC/ SE API CF-4/SG also indicates the grade applicable to gasoline or diesel engines

SAE: is the abbreviation of the Society of Automotive Engineers. It specifies the viscosity grade of engine oil. The viscosity of this classification is from low to high. (That is, 0W engine oil has the lowest viscosity, and 60 engine oil has the highest viscosity.) There are ten viscosity grades: 0W, 5W, 10W, 15W, 20W, 25W, 20, 30, 40, 50, and 60.

"W" is the abbreviation of "Winter" in English, which means engine oil with "W" grade, which is suitable for use in low-temperature climates in winter. The lower the number, the environment it is suitable for The temperature is also lower.

For example, the minimum pumping temperatures of 5W, 10W, and 15W engine oils are -30°C, -25°C, and -20°C respectively. The lower the number, the better the low-temperature fluidity, and the better the wear protection for the engine when starting at low temperatures. Engine oil is divided into single-grade viscosity engine oil and compound viscosity engine oil. SAE30, SAE40, engine oils are single-grade viscosity engine oils. Most engines operating above zero degrees Celsius usually choose single-grade engine oil. SAE10W-30 and SAE15W-40 are compound viscosity engine oils. In winter, in order to start quickly, engine oil with compound viscosity should be used. The engine oil with compound viscosity can meet the requirements of high and low temperature environments at the same time. It is suitable for use all year round and does not require seasonal oil changes.