The motor oil from one oil change will contaminate one million gallons of drinking water if not properly disposed of.
Step-by-step explanation:
Only one quart of oil can contaminate up to a quarter million gallons of drinking water or cause an oil slick almost 2 acres in size. Motor oil is used as a lubricant in motor vehicle engines.
The Environmental Protection Agency (EPA) does not consider uncontaminated used motor oil a hazardous waste if it is recycled for use as a lubricant or a fuel. However, improperly disposed of motor oil can contaminate the soil and surface and drinking water.