There are numerous places I can take it to , free . I suspect there is probably a secondary market for it . Maybe making bio-diesel ? Seems like I remember seeing paving contractors spraying some sort of " oil looking liquid " as part of the paving process ?
Might check & see if there is really a secondary market in your area ? Also do a google search for used oil .
We lived on a farm ( rented ) until I was in the 5th grade . The farm had oil wells on it . The oil company would spread waste oil on the dirt roads .
I suppose the volatiles would evaporate off leaving behind what , when mixed with dirt & baked in the summer sun , eventually became kind of like asphalt .
Not bad roads for farm implements & tractors . Or slow moving vehicles .
I have seen paving contractors spraying something like oil , as part of the paving process . Might check it out . Might be , you could legally use it for that ?
Tgere is nothing wrong with outing oil on the ground. It's the same thing as you can pour as much concrete on the ground to build a driveway but against the law to rinse out the concrete chute into the dirt. Check asphalt is mostly oil.
Here we have a so called environmentally friendly oil we can use.