1937 film produced by the US Auto Industry about the importance of lubrication. Motorists really ride on a film of oil, because all the moving parts of the engine are kept slipping over each other by a thin film of oil.
1937 film produced by the US Auto Industry about the importance of lubrication. Motorists really ride on a film of oil, because all the moving parts of the engine are kept slipping over each other by a thin film of oil.
