ABSTRACT
The use of wax and waxy feedstocks as a high VI feed source has grown in interest over the past several decades as refiners continue their search to produce lubricant base stocks with high Viscosity Index (VI) and associated properties. Shell has been a pioneer in this area with their use of slack wax, typically produced from a solvent dewaxing operation as a feed for their slate of Very High VI base stocks, known as Shell XHVI® at the Petit-Couronne Refinery in France [1,2].
