They all have the same basic stuff
The fuel from various filling stations and gas companies comes from a common source: the “base gas” from a petroleum refinery. This gas meets set minimum standards and every station begins with that foundation. From there the refining facility adds various compounds as mandated by the Environmental Protection Agency in order to cut down on emissions. Finally, the different gas companies — both major and off-brands — put their own additive packages in the gas to further boost both performance and, in particular, cleaning. That’s the difference between brands.
Then the marketing people get to work
Major oil companies spend millions of dollars trying to convince buyers that their premium price formulations are better by creating TV, radio and internet ads touting its superiority. These ads featuring scientists in lab coats, smiling cartoon cars, and carbonized engine valves are designed to get the point across, but is all this just a marketing gimmick? Well, it both is and isn’t. The Federal Trade Commission has rules about what you are allowed to say. There has to be some factual basis behind the claims but, that being said, there’s going to be some hyperbole involved as well. Let’s look at an example: “with Shell’s nitrogen-enriched gas, you won’t end up with a buildup of nasty gunk in your engine”, the company’s advertising promises. Read More: AutosModel.com