| 摘要 |
Middle distillate fuel composition is provided containing (a) a middle distillate base fuel, in particular a diesel base fuel, and (b) a Fischer-Tropsch derived paraffinic base oil component with a viscosity of at least 8 mm2/s at 100° C. In component (b), the ratio of the percentage of epsilon methylene carbon atoms to the percentage of isopropyl carbon atoms is suitably 8.2 or below. Its pour point may be -30° C. or lower. Also disclosed is the use of a Fischer-Tropsch derived paraffinic heavy base oil in a middle distillate fuel composition, for the purpose of improving the cold flow properties of the composition and/or for reducing the concentration of a cold flow or flow improver additive in the composition.
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