I regularly shop at the Norwalk Costco warehouse, which is the nearest one to Downey. But I have had to travel further to get Costco gas. I either have to go to Lakewood or Commerce or to a local gas station.
I have wanted the Norwalk warehouse to get their own gas station for years. And it has finally happened. They just opened about a month ago and now it is my regular gas stop. One more perk for living in Downey.