| http://www.w3.org/ns/prov#value | - However, in the present invention it has been found that using a feedstock comprising C.sub.5 -C.sub.18 or C.sub.6 -C.sub.16hydrocarbons provides lube products with surprisingly high VI. Prior to oligomerization the feedstock is purified to remove moisture and oxygenated organic compounds such as alcohols, ethers, peroxides and esters which would interfere with theoligomerizations process.Oligomer
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