Stop in for a cup of coffee

Seems like every other month I empty the oil drain (15 gallons) The guy I give it to uses it for heat in his shop but might be closing down soon so looking for options.
I always took mine to Autozone. They will take 5gal at a time. I needed to get rid of 20+ gal for work recently. Found a place in Jacobus through CL that burns it.