$13.$ Find out if the statement is true or false: Diesel oil, characterized by a high boiling point and viscosity, is predominantly used in road transport, maritime shipping, and industrial power generation due to its higher energy density compared to gasoline.

$14.$ Find out if the statement is true or false: Gas oil, another fraction of crude oil, is extensively used in residential heating applications and as a lighter fuel for some types of internal combustion engines.