With warmer weather just around the corner (thank goodness!) Many of you have been asking what exactly is summer gasoline, is it real, and who gets what. Let's try to shed some light on summer gasoline!

The EPA mandates gasoline burn cleaner in the summer months, and so there are many different types of gasoline in use across the U.S. to meet local standards. The significant difference between summer and winter gasoline is the specifications it must meet. Summer gasoline is commonly called "summer spec gasoline". It was then called summer gasoline to avoid confusion. The only difference between seasonal gasoline is it meets seasonal emission requirements and has different blending components or ingredients.

Check out the map included with this post to see if your area simply uses a lower RVP gasoline (white areas), or if they use a reformulated gasoline or exactly what is in use.

Summer gasoline is required to be the only fuel sold at terminals or racks, where stations buy their gas by May 1. Then a month later (June 1), stations most only sell gasoline that meets these specifications, aka summer gas.

The more exclusive type of gasoline, the more it costs to produce. You'll notice some entire states use different types of gasoline than other areas. It's important to note that all these types of gasoline will run your car just fine. Some just have lower emissions when burned or don't evaporate as easy.