Southern Oil manufactures multiple grades of group 1+ base oils for a wide range of process oil and blending application The most common grades are:
- SORBO/NORBO 32 (SN150 Light Base Oil), and
- SORBO/NORBO 52 (SN300 Heavy Base Oil).
Used oil re-refining has been commercially available since the mid-1980s, but few companies successfully produce lube-to-lube base oil to the standard required.
Using standard chemical engineering processes, Southern Oil employs a range of separation and extraction units to manufacture base oil from used oils to a consistent quality.
The re-refined base oil is then sold to third parties to blend with additives for engine, hydraulic, gear and transmission oils.
Southern Oil also manufactures multiple grades of fuel oil for a wide range of applications including marine and industrial furnaces. These are
- Light Fuel Oils,
- Distillate Fuel Oils,
- High Aromatic Fuel Oils, and
- Residual Fuel Oils
Lube oils are a blend of base oil and additives. After extraction during the re-refining process, residual components are sold as asphalt/bitumen extender.