Oil Bases
Oil bases and their quality are critical to the performance of finished products and represent approximately 75% to 80% of a final lubricant.
OIL BASES
GROUP I
Solvent-refined, they contain more impurities and sulfur. They are less stable and cheaper.
OIL BASES
GROUP II
Hydrocracked, purer and with better thermal and oxidative stability than those in Group 1.
OIL BASES
GROUP III
Highly refined, almost synthetic, with excellent stability, purity and improved oil performance.