sundevilMP5
Member
i was just sitting here pondering about gas...here in az they are pretty strict about emmissions and air quality...i've always known that they switch formulas between winter->summer and vice versa...i've never known exactly was is added or taken out...anybody shed some light on this?? i know it's supposed to burn cleaner in the summer since it's hot dry and basically the air just sits in the valley...but what is added??
