Oil is an essential lubricant in your engine. It lets metal press against metal without damage. For example, it lubricates the pistons as they move up and down in the cylinders.
1 By the time of the Japanese surrender in August 1945, Korea was the second-most industrialized nation in Asia after Japan itself.  But the wartime mobilization of 1937-45 had reintroduced harsh measures to Japanese colonial rule, as Koreans were forced to work in Japanese factories and were sent as soldiers to the front.
In 1982, KECO became a wholly government owned entity and was renamed the Korea Electric Power Corporation (KEPCO). KEPCO was listed on the Korea Composite Stock Price Index (KOSPI) on August 10, 1989 and later in 1994 on the New York Stock Exchange.EPCO traces its origins to Hanseong Jeongi Hoesa (Seoul Electric Company), founded in 1898 during the Joseon Dynasty. The announcement of the Chosun Electricity Control Decree by the Colonial Korean government in March 1943 saw the integration of several electric companies into the Korea Electric Power Company.