wherein the mixture of the first heavy oil fraction and the deasphalting residue comprises a dispersion of deasphalting residue in the first heavy oil fraction wherein the size of the dispersed particles is from 1 micron to 500 microns, and wherein the composition has performance grade at {HEAD ~ low temperature} of {TAIL ~ −10}° C. or less and a performance grade at high temperature of at least 64° C 
of
wherein the mixture of the first heavy oil fraction and the deasphalting residue comprises a dispersion of deasphalting residue in the first heavy oil fraction wherein the size of the dispersed particles is from 1 micron to 500 microns , and wherein the composition has performance grade at { HEAD ~ low temperature } of { TAIL ~ −10 } ° C. or less and a performance grade at high temperature of at least 64 ° C
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