Margin requirement (options) Definition: The amount of cash an uncovered option writer is required to deposit and maintain to cover his daily position valuation and reasonably foreseeable intraday price changes. Nearby Terms Margin of profit Margin of safety Margin requirement (options) Margin security Margin stock
A flexible-fuel vehicle (FFV) or dual-fuel vehicle (colloquially called a flex-fuel vehicle) is an alternative fuel vehicle with an internal combustion engine designed to run on more than one fuel, usually gasoline blended with either ethanol or methanol fuel, and both fuels are stored in the same common tank.
The flex-fuel-capable V8 is a $1,645 option, but that's the same price as its gasoline-only counterpart. E85 Is Just as Good as Gasoline If you purchase an E85 ethanol flex-fuel vehicle, or discover you already have one, and choose to run it on E85 ethanol it won't require drastic changes in your driving habits.