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Vintage 1930s black and white photo of an airplane banner adverting Germ Motor Oils. #178999875
Description
The New Book of Knowledge Encyclopaedia 1930s / 1940s - Social history. Vintage black and white photo of an airplane banner adverting Conoco Germ Motor Oils for Maximum Oiliness. advertisement in 1930s to sell products `sell the goods` statement. Motor oil, engine oil, or engine lubricant is any of various substances comprising base oils enhanced with various additives, particularly antiwear additive in addition to detergents, dispersants and, for multi-grade oils, viscosity index improvers. Motor oil is used for lubrication of internal combustion engines.
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