Bay Area never will be cheap on fuel, even next to refineries.
Living there I was finding cheap fuel at Bonfire in Concord, but DW did not like me to stop there becouse of neighborhood.
That is why driving the truck I was taking gas cans and filled them up at truck stops.
Chase in Coalinga charges today $3.25 for B20, than you have Joe's close to 505/5 intersection.
Lot of cheaper diesel along I-80 before you reach Sacramento.
Vegas to my knowledge uses California fuel, yet it is significantly cheaper here.