If you are familiar with car's, you may change the oil in your vehicle yourself. This can help you to save some money, or may even be a task you enjoy doing. However, when you are done, you are left with old, used oil. By law, this oil has to properly be disposed of. It cannot simply be tossed in the trash or sent down a street gutter. This is because oil can be harmful to our water supplies and animals. But this leaves you with an important question. What should you do with your old oil?
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