I'm surprised that businesses allow the public to dispose of their used oil.
Especially since they have no idea if it is only used oil, or someone has thrown in solvents, paint thinner, antifreeze, etc.....that then makes it a "hazardous waste."
Not only are they taking a chance of creating a hazardous waste (requiring costly and specific disposal procedures), once they reach a certain quantity/weight, they are then classified as a "generator" and must meet additional stringent standards.
Although I used to always change my own oil, the hassle of properly disposing of it makes the less than $30 cost to have someone else do it....well worth it.
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