Most of the chain fast food places are tough to get it from and I don't understand why. My budy has an old Mercedes and an f250. Both are running chinese food used cooking oil. My budy tells me the Chinese places are more than happy to give away the stuff. The Mercedes has some type of kit, but the f250 does not other than some type of tank heater. He puts the used fryer oil in the front tank and regular diesel in the rear tank. I know he adds a crap load of fuel additive to the used oil and it does get Gelled in the winter. Truck smells of funnel cake. That 7.3 has like 380K on the odometer and it gets treated like a ho with a chipped tooth.