LUBRICATING OIL COMPOSITIONS COMPRISING FISCHER-TROPSCH DERIVED BASE OILS

摘要

Use of a lubricating oil composition comprising at least one Fischer-Tropsch derived base oil for reducing exhaust port blocking of a 2-stroke engine. The present invention also relates to a 2-stroke lubricating engine oil composition comprising (i) at least one Fischer-Tropsch derived base oil having a kinematic viscosity at 100°C in the range of from 2 to 30 mm2/s at 100°C and (ii) 5 wt% or greater of a hydrocarbon solvent; wherein the lubricating engine oil composition has a Blocking Index of greater than 130 as measured by the JASO M343-92 Exhaust System Blocking Test Method.