Summer vs. Winter Blend Gasoline
If you’ve ever noticed gas prices creeping up in the spring and wondered, “What gives?” — you’re not alone. One of the lesser-known reasons behind that price jump is something most drivers don’t even realize is happening: the switch between winter and summer gasoline blends.
Yep, your fuel actually changes depending on the season, and no, it’s not just a conspiracy to empty your wallet. There’s real science and regulation behind it. Let’s break it down
Summer Blend Gasoline: Built for the Heat
In hot weather, fuel evaporates more easily. When it does, it releases vapors that contribute to smog and air pollution. To combat the evaporation, oil companies produce a summer blend that’s a little tougher and less volatile so it doesn’t evaporate as fast.
Lower Reid Vapor Pressure (RVP): This fancy term just means it doesn’t vaporize as easily in high heat.
Cleaner burning: Less evaporation = fewer emissions.
More expensive: It takes more refining and different ingredients, which is part of why prices go up in the spring and summer.