LUBRICATING OIL COMPOSITIONS COMPRISING HEAVY FISCHER - TROPSCH DERIVED AND ALKYLATED AROMATIC BASE OIL

摘要

A lubricating composition comprising a FT extra heavy base oil and an alkylated aromatic blendstock, wherein the FT extra heavy base oil has a kinematic viscosity at 100°C in the range of from 19 to 35 mm2/s. Also disclosed is a method of making a lubricating composition, the method comprising, blending a FT extra heavy base oil failing the 'clear and bright' standard (ASTM D4176) with an alkylated aromatic blendstock to provide a lubricating composition that passes the 'clear and bright' standard.