| 摘要 |
The lubricity of low sulfur content middle distillate fuel oil boiling over a temperature range of 100.degree.C to 500.degree.C is enhanced by incorporati on of a heavy fuel component having hydrocarbon components resulting from distillation of a cru de oil, whereby the incorporation of the heavy fuel component increases at least one of (a) the 50% distillation temperature, and (b) the polynuclear aromatic content of th e composition, and wherein the composition gives a wear scar diameter, as measured by the HFRR test at 60.degree.C, of at most 500 .mu.m.
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