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Motor oil, engine oil, or engine lubricant is any of various substances comprising base oils enhanced with particularly anti-wear additive plus detergents, dispersants and, for multi-grade oils viscosity index improvers. Motor oil is used for lubrication of internal combustion engines. The main function of motor oil is to reduce friction and wear on moving parts and to clean the engine from sludge (one of the functions of dispersants) and varnish (detergents).

Motor oil is a lubricant used in internal combustion engines, which power cars, motorcycles, lawnmowers, engine-generators, and many other machines. In engines, there are parts which move against each other, and the friction wastes otherwise useful power by converting the kinetic energy to heat. It also wears away those parts, which could lead to lower efficiency and degradation of the engine. This increases fuel consumption and decreases power output and can lead to engine failure.

In petrol (gasoline) engines, the top piston ring can expose the motor oil to temperatures of 160 °C. In diesel engines, the top ring can expose the oil to temperatures over 315 °C. Motor oils with higher viscosity indices thin less at these higher temperatures.

A Mono-grade engine oil, as defined by SAE J300, cannot use a polymeric viscosity index improver (VII, also viscosity modifier, VM) additive. SAE J300 has established eleven viscosity grades, of which six are considered Winter-grades and given a W designation. The 11 viscosity grades are 0W, 5W, 10W, 15W, 20W, 25W, 20, 30, 40, 50, and 60. These numbers are often referred to as the “weight” of a motor oil, and single-grade motor oils are often called “straight-weight” oils. For single non-winter grade oils, the kinematic viscosity is measured at a temperature of 100 °Cin units of mm2/s (millimeter squared per second) or the equivalent older non-SI units, centistokes (abbreviated cSt). Based on the range of viscosity the oil falls in at that temperature, the oil is graded as SAE viscosity grade 20, 30, 40, 50, or 60. In addition, for SAE grades 20, 30, and 40, a minimum viscosity measured at 150 °C and at a high-shear rate is also required. The higher the viscosity, the higher the SAE viscosity grade is.

Engine lubricants are evaluated against the American Petroleum Institute (API), SJ, SL, SM, SN, CH-4, CI-4, CI-4 PLUS, CJ-4, CK and FA as well as International Lubricant Standardization and Approval Committee (ILSAC) GF-3, GF-4 and GF-5, and Cummins, Mack and John Deere (and other Original Equipment Manufacturers (OEM)) requirements. These evaluations include chemical and physical properties using bench test methods as well as actual running engine tests to quantify engine sludge, oxidation, component wear, oil consumption, piston deposits and fuel economy. The API sets minimum performance standards for lubricants. Motor oil is used for the lubrication, cooling, and cleaning of internal combustion engines. Motor oil may be composed of only a lubricant base stock in the case of mostly obsolete non-detergent oil, or a lubricant base stock plus additives to improve the oil’s detergency, extreme pressure performance, and ability to inhibit corrosion of engine parts.

In Indepetro, We provide you awith all range of API and SAE in Gasoline/Diesel Engine Oils which produced with the best premium quality Virgin base oil and Additives.


Passenger cars, Bulldozer, Diesel Engines, Truck, Dump trucks, Motorcycles, lawnmowers, engine-generators, and many other machines

The temperature range the oil is exposed to in most vehicles can be wide, ranging from cold temperatures in the winter before the vehicle is started up to hot operating temperatures when the vehicle is fully warmed up in hot summer weather. A specific oil will have high viscosity when cold and a lower viscosity at the engine’s operating temperature. The difference in viscosities for most single-grade oil is too large between the extremes of temperature. To bring the difference in viscosities closer together, special polymer additives called viscosity index improvers, or VIIs, are added to the oil. These additives are used to make the oil a multi-grade motor oil, though it is possible to have a multi-grade oil without the use of VIIs. The idea is to cause the multi-grade oil to have the viscosity of the base grade when cold and the viscosity of the second grade when hot. This enables one type of oil to be used all year. In fact, when multi-grades were initially developed, they were frequently described as all-season oil. The viscosity of a multi-grade oil still varies logarithmically with temperature, but the slope representing the change is lessened. The SAE designation for multi-grade oils includes two viscosity grades; for example, 10W-30 designates a common multi-grade oil. The first number ’10W’ is the equivalent grade of the single grade oil that has the oil’s viscosity at cold temperature and the second number is the grade of the equivalent single-grade oil that describes its viscosity at 100 °C. Note that both numbers are grades and not viscosity values.


  •   SN PLUS 5W30
  •   SN 5W20
  •   SN 5W30
  •   SN 5W40
  •   SN 10W40
  •   SN/CF 5W30
  •   SN/CF 5W40
  •   SN/CF 10W40
  •   SL/CF 5W30
  •   SL/CF 10W40
  •   SL/CF 15W40
  •   SL/CF 20W50
  •   SJ/CF 20W50
  •   SG/CD 20W50
  •   SF/CD 50
  •   SF 40
  •   SC/CC 50


  •   CJ-4 5W30
  •   CJ-4 10W40
  •   CJ-4 15W40
  •   CI-4 10W40
  •   CI-4 15W40
  •   CH-4 10W40
  •   CH-4 15W40
  •   CH-4 15W50
  •   CH-4 20W50
  •   CG-4 10W40
  •   CG-4 15W40
  •   CG-4 20W50
  •   CF-4 10W40
  •   CF-4 20W50
  •   CF 10W40
  •   CF 20W50
  •   CF 30
  •   CF 40
  •   CF 50
  •   CD 30
  •   CD 40
  •   CD 50
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