What is the difference between winter and summer blend gasoline?

Winter-blend gas has a higher RVP because the fuel must be able to evaporate at low temperatures for the engine to operate properly. Summer-blend gas has a lower RVP to prevent excessive evaporation when outside temperatures rise.

Is winter gas less efficient?

Cold weather and winter driving conditions can reduce your fuel economy significantly. Fuel economy tests show that, in city driving, a conventional gasoline car’s gas mileage is roughly 15\% lower at 20°F than it would be at 77°F. It can drop as much as 24\% for short (3- to 4-mile) trips.

Is winter gasoline more volatile than summer gasoline?

Summer-grade gasoline has a lower volatility than winter-grade gasoline to limit evaporative emissions that normally increase with warm weather and cause unhealthy ground-level ozone. Volatility is a measure of how easily a liquid (or solid) will change into a vapor.

What do you understand by winter and summer gasoline?

The difference between summer and winter blend gasoline involves the Reid Vapor Pressure (RVP) of the fuel. The Reid Vapor Pressure (RVP) is really just a measure of how easily the gasoline evaporates at any given temperature. The higher the RVP, the easier it evaporates.

Why is summer gas more expensive than winter gas?

There are two main reasons for the slightly higher cost of the summer blend of gas. First, it has different ingredients than winter gas, and that can change the price. The other reason for the higher cost of summer-blend gasoline is that refineries have to briefly shut down to transition from winter to summer blends.

Does summer blend gas reduce mpg?

In terms of gas mileage, you get better mileage on summer blends than winter blends because the summer blend gasoline has about 2\% greater energy value than winter blend. So the gas you are using now most likely has a lower energy value than the gas you used in the summer.

What’s the difference between winter, summer gas blends?

There are actually real differences between summer blends and winter blends of gas. Let us explain. The main difference between summer and winter gas is that winter gas has a high Reid Vapor Pressure, or RVP. Gas with a higher RVP evaporates more quickly at a given temperature.

What is the difference between summer and winter gasoline?

The difference between summer- and winter-blend gasoline involves the Reid Vapor Pressure (RVP) of the fuel. RVP is a measure of how easily the fuel evaporates at a given temperature. The more volatile a gasoline (higher RVP), the easier it evaporates.

When does the winter blend gasoline start?

( WWLP ) – Gas stations use two blends of gasoline, a winter and a summer blend. For the past six months you’ve been using a winter blend of gasoline when you fill up at the pump. Likely sometime in April or early May, gas stations will switch to a summer blend.

What is the ‘winter blend’ in gasoline?

Winter gasoline blends have a higher molecular weight and are more volatile than summer blends because of a higher RVP and octane rating. Increased fuel volatility means that fuel can be atomized more thoroughly (increased fuel mileage) but it also evaporates more easily at higher ambient temperatures.