Abstract: A marine fuel composition for use in marine engines comprising a fuel component selected from the group consisting of high sulfur fuel oil, low sulfur fuel oil, slurry oil from a fluid catalytic cracker, heavy coker gas oil, light cycle oil from a fluid catalytic cracker, vacuum tower bottoms, atmospheric tower bottoms, low sulfur straight run, high sulfur straight run, distillate base stock, low sulfur vacuum gas oil, high sulfur vacuum gas oil, cracked or straight run fuel oil, straight run gas oil, ultra low sulfur heating oil, residues, and combinations of the same, present in an amount between 10 vol % and 99.9 vol %, and a lubricity component selected from the group consisting of a base oil, an aromatic extract, and combinations of the same, wherein a sulfur content is between 0.101 wt % and 5 wt %.

Abstract: Process to prepare a lubricating base oil having a saturates content of greater than 90 wt % and a viscosity index of greater than 90 starting from a vacuum distillate feedstock by performing the following steps: (a) contacting the vacuum distillate feedstock with an extraction solvent selective for extracting aromatic compounds from the vacuum distillate, (b) mixing the extracted oil obtained in step (a) with a feed comprising of more than 50 wt % wax or comprising of more than 80 wt % of paraffins and having a pour point greater than 0° C., (c) hydrotreating the blend obtained in step (b), (d) catalytically dewaxing the hydrotreated oil obtained in step (c) to obtained the lubricating base oil and (e) contacting the dewaxed oil with an aromatics saturation catalyst.