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 greasesmotor 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 1

SN 150
SN 500
SN 600

Group 2

N 70
N 100
N 150
N 500
N 600

Group 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



SN 150

SN 600

BS 150

BS 5000

BS 2500

PropertyStandard method (a)LimitSN 100SN 150SN 600BS 2500
AppearanceVisual Clear and BrightClear and BrightClear and BrightClear and Bright
ASTM ColorASTM D 1500Max1.
CCS Viscosity -25°C mPa*secASTM D 5293Max1650   
CCS Viscosity -20°C mPa*secASTM D 5293Max 1250  
Flash Point, COC Dg CASTM D92Min194210246294
Kinematic Viscosity @ 40°C mm2/secASTM D 445Min – Max18.5-21.029.0-32.0109.0-116.0 
Kinematic Viscosity @ 100°C mm2/secASTM D 445Min – Max   30.6-32.7
NOACK Volatility wt%ASTM D 5800
Pour Point Deg CASTM D 97Max-18-12-6-6
Viscosity IndexASTM D 2270Min951009595