COMBINED LUBRICANT AND FUEL PACKAGE FOR USE IN AN INTERNAL COMBUSTION ENGINE

摘要

The present invention relates to a combined lubricant and fuel composition package for operating a diesel engine, wherein the lubricant comprises a base oil comprising (i) a continuous series of iso-paraffins having n, n+1, n+2, n+3 and n+4 carbon atoms, and/or (ii) a continuous series of iso-paraffins having n, n+2 and n+4 carbon atoms and not containing n+1, and n+3; wherein n is between 15 and 40; and wherein the fuel composition comprises a paraffinic gas oil component having a paraffin content of greater than 80 wt % paraffins and a saturates content of greater than 98 wt %, and to its use in the reduction of nitrogen oxide in engine operation.