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.
The project is part of the 60th anniversary of The Korea Times, which falls on Nov. 1. The first president of the newly-formed Republic of Korea, Syngman Rhee, had an impressive background from the perspective of both the Americans, who had ruled the southern half of the peninsula for three years before its establishment, and the Korean citizenry.