Neighbor that has a fuel polishing business doesn't need any stinking
french fry oil to run his diesel truck.
Typical customer calls and wants all the diesel removed from his
tanks for one reason or another and asks if the neighbor can also
dispose of it. Neighbor says sure but there is a $50 disposal fee on top
of the pumping fee.
Pumps the rotten diesel into 55 gal barrels, takes it home, filters
it through his own system and pumps it into his truck.
Wrong color but who's checking!

BTW, He had a customer that ran fresh water into his fuel tank. He
pumped and polished the fuel to remove the water. Not two weeks later,
the same customer called and said he had did it again!!!!
Gordon