Some customers tell Eyewitness News they are avoiding BP because they are angry about how the company's oil spill is polluting the Gulf Coast.
Tracey Sarn is filling up at Gulf, her personal protest against BP.
The 'boycott BP' movement is catching on.
More than 100,000 people have joined a group on Facebook.
Images of the environmental devastation in the Gulf, and BP's continued failure to cap the leak, have turned even loyal customers against the company.
"I've really been rethinking this because this spill is nonstop," driver Francis Pagan said.
Some experts question whether boycotting BP is effective.
Gasoline is a commodity that's traded, which means that the gasoline you buy at another station may actually have been sourced or refined by BP.
"The only people they're hurting are the independent owner operators who aren't really affiliated with BP," said Peter Beutel, a gas and oil analyst.
Chances are, even if you're boycotting BP gas stations, you're still using their products.
BP also makes motor oil, asphalt and aluminum.
Beutel says you're better off trying to persuade money managers not to buy BP stock.
BP had sales of $241 billion last year, and so far, has not felt the impact of any boycott.
Some drivers in our area aren't ready to blame the company for what they view as an accident.
"Unfortunate accidents happen and hopefully they get it cleaned up soon," driver Faydra Campbell said.
BP gas station owners tell Eyewitness News their businesses have not suffered as a result of the oil spill and they're expecting a busy holiday weekend of sales.