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jedi_sol · 11-15-2014, 07:35 PM

What is the Difference between Summer- and Winter-Blend Gasoline? | AAA NewsRoom

The US Environmental Protection Agency (EPA) says conventional summer-blend gasoline contains 1.7 percent more energy than winter-blend gas, which is one reason why gas mileage is slightly better in the summer. However, the summer-blend is also more expensive to produce, and that cost is passed on to the motorist.

The switch between the two fuels happens twice a year, once in the fall (to winter-blend) and again in the spring (to summer-blend). The changeover requires significant work at refineries, so oil companies schedule their maintenance for those times when they will already be “down” for the blend switches.]

11-15-2014, 07:35 PM	#172 (permalink)
jedi_sol Master EcoModder Join Date: Mar 2009 Location: Tustin, CA Posts: 929 2013 STi SOLD - '13 Subaru Impreza WRX STi Subaru Sports Cars Team Turbocharged! 90 day: 26.59 mpg (US) 1996 Geo Metro RETIRED from Ecomodding - '96 Geo Metro Base 90 day: 58.68 mpg (US) Thanks: 368 Thanked 380 Times in 238 Posts	What is the Difference between Summer- and Winter-Blend Gasoline? \| AAA NewsRoom The US Environmental Protection Agency (EPA) says conventional summer-blend gasoline contains 1.7 percent more energy than winter-blend gas, which is one reason why gas mileage is slightly better in the summer. However, the summer-blend is also more expensive to produce, and that cost is passed on to the motorist. The switch between the two fuels happens twice a year, once in the fall (to winter-blend) and again in the spring (to summer-blend). The changeover requires significant work at refineries, so oil companies schedule their maintenance for those times when they will already be “down” for the blend switches.] __________________ See the rest of the Sti project log: http://ecomodder.com/forum/showthrea...log-26612.html