This black & white educational/promotional film is about the Amazing New Mobiloil. There is no copyright and this is circa the mid to late 1940s as World War 2 is mentioned as having just passed.

Opening titles: Socony-Vacuum presents KEEP IT CLEAN!, The Story of an Amazing New Mobiloil for safer, cleaner engines (:06-:34). War footage, tanks, soldiers on the move. Construction vehicles. Tanks and war vehicles move along dusty roads and through some water. A man looks at an engine. Engineers study an engine. Close on an engine. Military vehicles move up a mountain road, through mud and sand. Men stop and try to fix a truck but can’t as they are under fire. Trucks go through the snow during the second world war. Barrels of oil are passed between men. Engineers study motor oil and experiment with it. Factory exterior. Engineers experiment with oil. Cars drive through a city street. Farmer plows with a tractor (:35-3:41). Close on an engine in motion. Close on a car’s engine. Diagram shows how free flowing oil is important and how oil should be double range for high and low temperatures. Close on engine parts. Diagram on an engine. A man talks to the camera about lubricants as he stands in front of an engine’s diagram. Assembly line workers load an engine into a car body. Close on an engine. A hand removes some grim. Different kinds of pollutants for an engine are shown as well as water. Close on a tailpipe producing steam. The man points at the diagram (3:42-7:24). Oil is poured into a cup. Onscreen title shows us that “oil + air = lacquer, gum & sludge.” A hand uses a knife to scrap metal. A pile of rust. A man paints a wall. He then puts lacquer on a door. He paints walls as well. Animated engine is shown working. The man talks to the camera as he stands in front of an engine diagram (7:25-10:34). A cup of lacquer sits idle. Sludge is shown on an engine part. A piston head that has a carbon deposit on it. The engine’s diagram is shown again (10:35-12:00). Sludge is scrapped off of an engine. The man points at the diagram. A hand puts sugar in water and dissolves it. Close on engine deposits. Exterior shots of factories. An engineer does an experiment on oil

(12:01-15:12). Oil is shaken in tubes. An oil filter is moved by hands. A mechanic works on a car and adds oil. The man continues to talk (15:13-16:40). Cars drive down a highway. Various cars in various shots. A man enters a car and starts it, drives away. An engineer does an experiment. A hand adds oil. Cars drive down a road. A pair of pistons shown close up, before and after 2000 miles worth of driving. Stems are shown before and after driving. Bearing before and after the test. Engine conditions improved on the new Mobil oil. Close on a car engine (16:41-19:53). Plows move through dirt. Close on pistons before and after using the Mobil Oil on their engines. Cars drive down the highway. A truck goes fast down a street. Tractors and farm machines. Close on an engine. Plows on a farm (19:54-21:09). On screen titles about the new Mobil Oil. A hand pours oil into an engine. Engine parts are shown up close. A can of Mobil Oil (21:10-22:09). End title (22:10-22:18).

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This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com