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The transportation industry, the average automobile has 12-14 different types of filters and vents. Locations include the crankcase, gas tank, fuel line, engine air in-take, transmission, air bag inflator system and head and tail lamps and electrical motor vents. Cabin air filters have now found their way in some models, especially in Europe. The automotive industry supplies and car owners use almost 20 million original equipment and 400 million replacement oil filters annually in the United States alone. Europe uses a similar volume. There are millions of Dollars/Euro.s spent worldwide on filters in the automotive factories to process machine coolant water in metal working, hydraulic fluids in equipment and presses, wastewater treatment and paint filters for the mirror finish we all want on the new car we purchase.