What Is Engine Oil

Diesel engine oil quality classification symbol API engine job classification standard ASTM vehicle efficiency standards with a mild oil CA diesel engine of job：
It refers to the use of diesel engines of high-quality diesel operation under mild conditions, which may also include a moderate job of gasoline engine.
The oil job in this case, Mr Tsang for 1940 to 1950 years ago, the factory gasoline and diesel engines.
"diesel engine" low-sulfur diesel fuel containing 0.5% or less lubrication purposes. MIL-L-2104A with motor oil specifications published as US vehicles in 1954.

CB Moderate Diesel engine operating standards：
Refers to lower the quality of diesel fuel use and operation of the diesel engine moderate, it needs to strengthen its anti-wear and the elimination of carbon, of which only moderate for vegetables, including gasoline engines. Such oil-based views came in early 1949, for burning naturally aspirated diesel engine use of high-sulfur diesel fuel, this engine is more than the CA for further the corrosion resistance, high temperature coking performance.
"engine (fueled with high-sulfur diesel) with lubrication", its quality compared with MIL-L-2104A higher or equivalent Supplement-l of quality.

CC petrol and diesel engines being of jobs：
It refers to mild to moderate supercharged diesel engines and even serious job of work, including the work of a number of serious gasoline engine. Such oil in 1961 came widely used in vehicles and construction machinery, industrial machinery. Agricultural machine, which is characterized by increased pressure inside the suppression mild high temperature coking diesel engine corrosion, rust and low contamination of the gasoline engine. Compliance with MIL-L-2104B anti-corrosion properties of oils for mild charged diesel engine lubricating purposes, and has anti-low-temperature sludge. MIL-L-2104B for the 1964 revision of the British motor oil specifications.

CD diesel engine serious job：
It means a supercharged diesel engine at high speed, high load, high horsepower job situation, the need for effective resistance to wear and coke were. Oil for such operations began in 1955 with the advent, mainly for supercharged diesel engines of high-quality diesel fuel to resist bearing corrosion, high or low carbon and so on. The lubricating oil for moderate and highly supercharged diesel engines of the journey starts in 1955. But this oil quality specification with the US publication in 1958 MIL-L-45199 fairly.

CE diesel engine serious job：
Mechanical or turbocharged and direct injection diesel engines apply. October 1987 advent of the control of engine deposits, oxidation, anti-wear, better fuel economy compared with the past. In addition to meeting the requirements CD level. Another accord Mack Trucks inc T-6 and T-7 test and Cumm -.. Ins EngineCo NTC400 test.
CF is suitable for high-speed, four-stroke diesel engines, especially for highway driving and heavy truck engines, since 1991 began to use, providing improved fuel consumption and piston deposit control. - CF-2 1994 年 import, for heavy load two-stroke diesel engine, can also be used in diesel engines CD- II level.
- CF-4 1994 年 import, for high-speed, four-stroke naturally inhaled or turbocharged diesel engine, also used in the CD level, CE grade diesel engine.
- CG-4 1995 年 introduced, for heavy-duty, high-speed four-stroke engine, the use of less than 0.5% of the sulfide-containing fuel. In line with the 1994 emission standards. Can be used for CD-level, CE grade, CF-4 grade diesel engine.
- CH-4 1998 年 12 月 1 日 import, for high-speed four-stroke engine and meet 1998 emission standards, the use of a special way can be mixed within the ratio of diesel sulfide content of 0.5%, may also be used to meet the CD grade, CF-4 级, CG-4 grade diesel engine.