Group I base oils are classified as less than 90 percent saturates, greater than 0.03 percent sulfur and with a viscosity-index range of 80 to 120. The temperature range for these oils is from 32 to 150 degrees F. Group I base oils are solvent-refined, which is a simpler refining process. This is why they are the cheapest base oils on the market.
Base oils are used to manufacture products including lubricating greases, motor oil and metal processing fluids. Different products require different compositions and properties in the oil. One of the most important factors is the liquid’s viscosity at various temperatures. Whether or not a crude oil is suitable to be made into a base oil is determined by the concentration of base oil molecules as well as how easily these can be extracted.
Group II base oils are defined as being more than 90 percent saturates, less than 0.03 percent sulfur and with a viscosity index of 80 to 120. They are often manufactured by hydrocracking, which is a more complex process than what is used for Group I base oils. Since all the hydrocarbon molecules of these oils are saturated,
Group III base oils are greater than 90 percent saturates, less than 0.03 percent sulfur and have a viscosity index above 120. These oils are refined even more than Group II base oils and generally are severely hydrocracked (higher pressure and heat). This longer process is designed to achieve a purer base oil.
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.
Group 1SN 150
Group 2N 70
Group 3CST 3
Group 3Plus Group 3+ is a high quality Group III+ base oil, manufactured
Our Major supply
Russian, Saudi and ME – Base oil Group 1
Bahrain, Malaysia, Korea – Group 2 and Group III and Group III+
Thailand and Korea Bright Stock
Group 1 BASE STOCK
|Property||Standard method (a)||Limit||SN 100||SN 150||SN 600||BS 2500|
|Appearance||Visual||Clear and Bright||Clear and Bright||Clear and Bright||Clear and Bright|
|ASTM Color||ASTM D 1500||Max||1.0||1.5||4.0||6.0|
|CCS Viscosity -25°C mPa*sec||ASTM D 5293||Max||1650|
|CCS Viscosity -20°C mPa*sec||ASTM D 5293||Max||1250|
|Flash Point, COC Dg C||ASTM D92||Min||194||210||246||294|
|Kinematic Viscosity @ 40°C mm2/sec||ASTM D 445||Min – Max||18.5-21.0||29.0-32.0||109.0-116.0|
|Kinematic Viscosity @ 100°C mm2/sec||ASTM D 445||Min – Max||30.6-32.7|
|NOACK Volatility wt%||ASTM D 5800||Max||29.3||15.8|
|Pour Point Deg C||ASTM D 97||Max||-18||-12||-6||-6|
|Viscosity Index||ASTM D 2270||Min||95||100||95||95|