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.
Despite statistics showing that South Korea is becoming an increasingly multi-ethnic society, most of the South Korean population continues to identify itself as one people (Korean: ë¨ì¼ë¯¼ì¡±; Hanja: å®ä¸æ°æ, danil minjok) joined by a common bloodline.ontrary to popular belief in modern Korea, the ideology of an ever-present Korean purest race began only in the early twentieth century, when the Imperial Japanese annexed the Korean Peninsula and launched a campaign to persuade Koreans that they were of the same pure racial stock as the Japanese themselves.