Is citgo still making any oil for them at all?
Dunno, there's a lot of blends. Use the link I provided and go one by one and see if Citgo is the mfg. I know Citgo was in the past but if I had to guess, I'd say no right now... besides I thought there was an embargo against petroleum from Venezuela. And I thought Wally's gas was Marathon in some areas but I'm not 100% on that. 7-11 use to sell Citgo gas for a while there..
Warren, TCC out of Houston, GoldEagle, STP/ArmourAll I think are the main private label suppliers right now for Wally's petroleum stuff. I think Old World (Peak) and Prestone was doing their coolant, psf and brake fluid.. not sure now.