Abstract: A fuel composition for use in internal-combustion engines has a fuel component, an alcohol component, a water component, a microemulsion blend, and a cetane-enhancer component. The microemulsion blend includes at least one of lower grade fatty acid derivatives being present in an amount effective for the fuel, alcohol, and water components to form a microemulsion blend. The emulsifier is present in an amount effective for the biodiesel fuel, alcohol, water, and emulsifier to form an emulsion.

Abstract: A fuel composition for use in internal-combustion engines has a fuel component, an alcohol component, a water component, a microemulsion blend, and a cetane-enhancer component. The microemulsion blend includes at least one of lower grade fatty acid derivatives being present in an amount effective for the fuel, alcohol, and water components to form a microemulsion blend. The emulsifier is present in an amount effective for the biodiesel fuel, alcohol, water, and emulsifier to form an emulsion.

Abstract: A fuel composition for use in internal-combustion engines has a fuel component, an alcohol component, a water component, a microemulsion blend, and a cetane-enhancer component. The microemulsion blend includes at least one of lower grade fatty acid derivatives being present in an amount effective for the fuel, alcohol, and water components to form a microemulsion blend. The emulsifier is present in an amount effective for the biodiesel fuel, alcohol, water, and emulsifier to form an emulsion.

Abstract: A fuel composition for use in internal-combustion engines has a lower grade fuel component, and a microemulsion. The microemulsion includes at least one of hydrous component, renewable component, and polar component being present in an amount effective for forming the fuel composition. The fuel composition may enhance lubricity, corrosion, and water stability without the use of other additives and inhibitors.

Abstract: A fuel composition for use in internal-combustion engines has a lower grade fuel component, and a microemulsion. The microemulsion includes at least one of hydrous component, renewable component, and polar component being present in an amount effective for forming the fuel composition. The fuel composition may enhance lubricity, corrosion, and water stability without the use of other additives and inhibitors.

Abstract: A fuel composition for use in internal-combustion engines has a fuel component, an alcohol component, a water component, a microemulsion blend, and a cetane-enhancer component. The microemulsion blend includes at least one of lower grade fatty acid derivatives being present in an amount effective for the fuel, alcohol, and water components to form a microemulsion blend. The emulsifier is present in an amount effective for the biodiesel fuel, alcohol, water, and emulsifier to form an emulsion.

Abstract: A blendstock for forming a fuel composition for use in internal-combustion engines, includes a polar fluid component, a microblender component, and a neutralizer component. The neutralizer component is present in an amount effective to substantially neutralize the microblender component to allow for the microblender component to substantially spontaneously blend with the polar fluid component. The polar fluid component may include a water component and an alcohol component, and the neutralizer component may include an ammonia component. The blendstock may be added to a hydrocarbon fuel, such as diesel fuel, to form the fuel composition.

Abstract: A blendstock for forming a fuel composition for use in internal-combustion engines, includes a polar fluid component, a microblender component, and a neutralizer component. The neutralizer component is present in an amount effective to substantially neutralize the microblender component to allow for the microblender component to substantially spontaneously blend with the polar fluid component. The polar fluid component may include a water component and an alcohol component, and the neutralizer component may include an ammonia component. The blendstock may be added to a hydrocarbon fuel, such as diesel fuel, to form the fuel composition.