The difference between the summer and winter gs is the RVP (Reed Vapor Pressure). The science of it , from a non scientist, is there is less oxygen in the summer gas. And the summer gas will run like crap in everything in cold ambient temps, but winter gas will run year round and better in the summer than summer gas. Is that due to the oxygen content? I'm not sure. Supposedly, the purpose of the change is to reduce emissions. But for absolutely sure, it creates an expense on the refineries and fuel terminals when they have to flush their systems from one to the other.
Complaining about the amount of tax you pay? We New Yorkers used to do that and then PA raised their tax rate. Maybe if enough Pensyltuckians complain, then Maryland will raise their gas tax to the highest in the land.
