In other words if you want to trade sun, the only one left are SXL sunoco logistics and Sun Coke SXC. Sun Log is the new sun. SXC was broke off totally in it's own, and is not affiliated with the sun name, even though it keeps the same name. There are non-operating intrest in the one refinery- for retail stake and branding which was bought by ETP- SUN/SXL. SXL's general partener is Sunoco Partners which is Sun which is held through ETP. But to know for sure to invest in Sunoco would be with SXL- b/c thats what the new sunoco is- a tranportation fuel provider,crude oil supplier,NGL supplier,pipeline and storage operator with non-operating intrest in refining.