Base Oil Industrial and Automotive
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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. Although made from crude oil, Group III base oils are sometimes described as synthesized hydrocarbons. Like Group II base oils, these oils are also becoming more prevalent.
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 the solvent refining used for Group I base oils.
PETROFLO NON-DETERGENT NAPHTHENIC OIL 50w is a specialized naphthenic base oil without detergent additives. This oil is designed for specific applications where non-detergent oils are required, providing excellent performance for specialized industrial uses.