BASE OILS

Group I Base Oils

Group I base oils are the least refined of all the groups. With the use of solvents impurities are leeched out so it can be further processed. This method is quite standard and is the minimum when refining base oils. The mix after refining is made up from different hydrocarbon chains with little or no uniformity. While some automotive oils on the market use Group I stocks, they are generally used in less demanding applications. They are defined as having a viscosity index between 80 and 120 while the level of sulphur is larger than 0.03%.

SPECIFICATION


SN 65 SN 70 SN 150 SN 500 BS 150
SL.NO Parameter Method Unit Result Result Result Result Result
1 Flash point ASTM D92 °C Min 170 Min 174 Min 200 250 Min 250
2 Pour point ASTM D97 °C Max - 6 Max - 6 Max - 3 -3 Max - 3
3 Density at 15 °C ASTM D1298 Kg/l 0.85 0.85 0.878 0.8947 0.901
4 Viscosity @40°C ASTM D445 cSt Min 8 Min 8.5 Min 29.4 110 Min 450
5 Viscosity @100°C ASTM D445 cSt Min 2.28 Min 2.3 Min 5 11.73 29.5
6 Viscosity Index ASTM D2270 - Min 90 Min 90 Min 92 94 Min 90
7 Color ASTM D1500 - Max 0.5 Max 1.0 Max 2 L 2.5 Max 4
8 Odor Organoleptic - - - - No Foul smell -
9 Appearance Visual - Clear & Bright Clear & Bright Clear & Bright Clear & Bright Clear & Bright

*Disclaimer: Data mentioned in this document and on our site is meant to enable readers to orient themselves about the properties and possible applications of our products and is subject to change without notification.

Group II Base Oils

Group II base oils are common in mineral based motor oils currently available on the market. They have undergone hydroprocessing which increases the level of saturates and purges out impurities. They have fair to good performance in lubricating properties such as volatility, oxidative stability and flash/fire points. They have only fair performance in areas such as pour point, cold crank viscosity and extreme pressure wear. They are defined as having a viscosity index between 80 and 120 while having a level of sulphur lower than 0.03%.

SPECIFICATION


N 150 N 500 N 600
SL.NO Parameter Method Unit Result Result Result
1 Flash point ASTM D92 °C Min 200 Min 242 Min 245
2 Pour point ASTM D97 °C -3 Max -12 Max - 12
3 Density at 15 °C ASTM D1298 Kg/l 0.878 0.87 0.87
4 Viscosity @40°C ASTM D445 cSt Min 29.4 Min 110 Min 110.5
5 Viscosity @100°C ASTM D445 cSt Min 5 Min 11 Min 11.6
6 Viscosity Index ASTM D2270 - Min 92 Min 95 Min 95
7 Color ASTM D1500 - Max 2.0 L 0.5 L 0.5
8 Odor Organoleptic - - - -
9 Appearance Visual - Clear & Bright Clear & Bright Clear & Bright

*Disclaimer: Data mentioned in this document and on our site is meant to enable readers to orient themselves about the properties and possible applications of our products and is subject to change without notification.

Group III Base Oils

Group III base oils are subjected to the highest level of mineral oil refining of the base oil groups. Although they are not chemically engineered, they offer good performance in a wide range of attributes as well as good molecular uniformity and stability. They are commonly mixed with additives and marketed as synthetic or semi-synthetic products because of this. Their viscosity index is above 120 while the level of sulphur is below 0.03%.

SPECIFICATION


SL.NO PARAMETER METHOD N 100 N 150 N 250
1 Flash point ASTM D92 224 224 248
2 Pour point ASTM D97 -15 -12 -12
3 Density at 15C ASTM D1298 0.8344 0.8425 0.8454
4 Viscosity @40°C ASTM D445 19.39 34.96 44.81
5 Viscosity @100°C ASTM D445 4.23 6.315 7.409
6 Viscosity Index ASTM D2270 125 132 130
7 ASTM Color ASTM D1500 L0.5 L0.5 L0.5
8 Odor Ol Factor Marketable Marketable Marketable

*Disclaimer: Data mentioned in this document and on our site is meant to enable readers to orient themselves about the properties and possible applications of our products and is subject to change without notification.

Group IV Base Oils

Group IV base oils are polyalphaolefins (PAOs). These synthetic base oils are made through a process called synthesizing. They have a much broader temperature range and are great for use in extreme cold conditions and high heat applications.

BASE OIL - GROUP V

Group V base oils are classified as all other base oils, including silicone, phosphate ester, polyalkylene glycol (PAG), polyolester, biolubes, etc. These base oils are at times mixed with other base stocks to enhance the oil’s properties. An example would be a PAO-based compressor oil that is mixed with a polyolester. Esters are common Group V base oils used in different lubricant formulations to improve the properties of the existing base oil. Ester oils can take more abuse at higher temperatures and will provide superior detergency compared to a PAO synthetic base oil, which in turn increases the hours of use.

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