The basic kinds of motor foels, used on motor transport, are gasoline and diesel fuel of various grades and stamps. Last years in the countries CIS carried out researches in a direction of improvement of power maintenance of motor transport traditional fuels by increase of an output of light mineral oil at the expense of depth of oil refining and optimization of quality of fuel (alas, it does not concern to Ukraine as extraction of oil by it makes about 4 million т.). We shall consider, what requirements show to physical and chemical parameters modern foreign both domestic diesel fuels and gasolines (table 1, 2).
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