For me, I focus on name brand gas stations. I've found that smaller stations that aren't regularly used tend to be maintained less frequently than those stations that have a constant flow of vehicles.
For instance, I used to live in Florida and some mom/pop stations right on the beach had problems with salt getting into their tanks and mixing with the fuel because they weren't maintained properly.
For instance, I used to live in Florida and some mom/pop stations right on the beach had problems with salt getting into their tanks and mixing with the fuel because they weren't maintained properly.