This is a chart showing six images with captions, explaining how lubricants can become contaminated from the time they are produced to the time they are put into use.  1. An image of a refinery at night. Caption: Lubricants being shipped from the manufacturing and blend plant contain contaminants.   2. An image of a red truck and trailer hauling lubricants. Caption: Then they are transported to the marketer warehouse by truck or rail.   3. An image of white bulk fuel and lubricant tanks. Caption: The oil is pumped into marketer storage tanks.  4. An image of a tank wagon, on the road for delivery. Caption: Lubricants are transfered from the storage tanks into marketer delivery trucks.   5. An image of a small, white lubricant storage tank. Caption: Marketers deliver oil to customers.   6. An image of a backhoe, digging in the dirt. Caption: Customers use the lubricants in equipment and may add contaminants by using dirty dipsticks, top off containers, or hoses.
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