Ethyline (car fuel type 3). It is a mixture of pure gasoline and ethyl fluid, in proportion 1,5 cm3 (maximum) on 1 kg of gasoline. Due to the admixture of ethyl fluid, a higher detonation resistance is obtained than this, which pure gasoline has. When working with ethylene, follow the safety regulations, it has strong poisonous properties. It is colorless and waterless (transparent), the c. on. 0,750-—0,760, upper calorific value 11 000 cal, an octane rating of at least 70. It is used for low-compression car engines. Motor benzol It is obtained through the processing of crude benzol. Crude benzol is not a petroleum derivative product. It is obtained from coke oven gas as a fraction of the raw tar distillation. Motor benzole is a mixture of aromatic hydrocarbons, benzene, toluene, xylenes and higher homologues and some small amount of aliphatic hydrocarbons. It is a high octane propellant, high caloric value and satisfactory; volatility Its disadvantage is the relatively high pour point, specified for pure benzol as 5.5 ° C. Motor benzol should be transparent, colorless, Alternatively, with a yellowish tinge. It should have a characteristic smell. It occurs in 2 types: summer and winter. Motor benzole is used almost exclusively as a component in car blends, with gasoline or with gasoline and alcohol. It is used in its pure form for heavy fuel engines.