Children's Books on the Baby Name Millicent. Millicent and Meer (Richard Byrne) - Millicent is a little girl who has always wanted a cat. One day, as she is playing outside, a large shipping box falls from somewhere and lands right beside her.
Gasoline is primarily composed of octane. With that out of the way: the octane rating of gasoline only has a tangential relationship to the chemical octane. The octane rating is a measure of the resistance of gasoline and other fuels to detonation (engine knocking) in spark-ignition internal combustion engines.It is so named because a fuel composed of 100% iso-octane has an octane rating of 100.uels which are less resistant to detonation have an octane rating lower than 100, fuels that are more resistant to detonation have octane ratings greater than 100. Since ethanol is less explosive and more resistant to detonation than iso-octane, it has an octane rating greater than 100.
Only flex-fuel vehicles can use gasoline with an ethanol content greater than E15. The energy content of ethanol is about 33% less than pure gasoline, although this varies depending on the amount of denaturant that is added to the ethanol. Therefore, vehicle fuel economy may decrease by up to 3.3% when using E10.n general, the ethanol content of motor gasoline does not exceed 10% by volume. Gasoline with 10% ethanol content is referred to as E10, and gasoline with 15% ethanol content is called E15.