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A fuel composition of improved lubricity comprises a lubricity-increasing amount of a lubricity aid dissolved in low sulfur diesel fuel and spark ignition fuels. The lubricity aid is an alkanolamide of a fatty acid, an alkanolamide of a modified fatty acid or a mixture thereof. If the lubricity aid

A fuel composition of improved lubricity comprises a lubricity-increasing amount of a lubricity aid dissolved in low sulfur diesel fuel and spark ignition fuels. The lubricity aid is an alkanolamide of a fatty acid, an alkanolamide of a modified fatty acid or a mixture thereof. If the lubricity aid is other than an alkanolamide of an aryl-substituted fatty acid, the composition further necessarily comprises a haze-inhibiting amount of a dehazer. The lubricity of such fuels may be enhanced without acceptably increasing the tendency of the fuel to become hazy upon contact with water.

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A fuel composition of improved lubricity comprises a lubricity-increasing amount of a lubricity aid dissolved in low sulfur diesel fuel and spark ignition fuels. The lubricity aid is an alkanolamide of a fatty acid, an alkanolamide of a modified fatty acid or a mixture thereof. If the lubricity aid

A fuel composition of improved lubricity comprises a lubricity-increasing amount of a lubricity aid dissolved in low sulfur diesel fuel and spark ignition fuels. The lubricity aid is an alkanolamide of a fatty acid, an alkanolamide of a modified fatty acid or a mixture thereof. If the lubricity aid is other than an alkanolamide of an aryl-substituted fatty acid, the composition further necessarily comprises a haze-inhibiting amount of a dehazer. The lubricity of such fuels may be enhanced without acceptably increasing the tendency of the fuel to become hazy upon contact with water. e flow control signal to change the flow of fluid drops in response thereto. 9. The apparatus of claim 1 wherein the volume determining system is further configured to integrate the individual determined volumes of the fluid drops passing between the two opposing plates over a selected period of time and provide a volume per unit time signal. 10. The apparatus of claim 9 further comprising a display connected to the volume determining circuit that receives the volume per unit time signal and displays a fluid flow rate based on the volume per unit time signal. 11. The apparatus of claim 1 further comprising: a memory in which is stored a selected rate of fluid flow; a processor connected to the memory and comparing the stored rate of fluid flow to the volume per unit time signal and providing a flow control signal based on the difference; and a flow control device responsive to the flow control signal to change the flow of fluid drops in response thereto. 12. The apparatus of claim 1 wherein the plates are embedded in the wall of a drip chamber and the path is located between the plates within the drip chamber. 13. The apparatus of claim 1 wherein the plates are mounted to the exterior of the wall of a drip chamber and the path is located between the plates within the drip chamber. 14. An apparatus for determining the volume of a drop of medical fluid that moves through a predetermined path within a medical conduit having a wall, comprising: two plates forming a capacitor, the plates being mounted to the wall of the conduit such that they are separated by and positioned on either side of the predetermined path so that the drop of medical fluid passes between the plates as it moves through the predetermined path thereby changing the capacitance of the capacitor; a volume determining system connected to the capacitor configured to: measure the amount of change in capacitance of the capacitor as the drop of medical fluid moves through the predetermined path in the medical conduit between the two opposing plates; determine the volume of the fluid drop based on the amount of change of capacitance caused by the fluid drop moving between the two opposing plates; and integrate the individual determined volumes of the fluid drops passing between the two opposing plates over a selected period of time and provide a volume per unit time signal. 15. The apparatus of claim 14 further comprising a display connected to the volume determining circuit that receives the volume per unit time signal and displays a fluid flow rate based on the volume per unit time signal. 16. The apparatus of claim 15 further comprising: a memory in which is stored a selected rate of fluid flow; a processor connected to the memory and comparing the stored rate of fluid flow to the volume per unit time signal and providing a flow control signal based on the difference; and a flow control device responsive to the flow control signal to change the flow of fluid drops in response thereto. 17. A method for determining the volume of a fluid drop that moves through a predetermined path, comprising the steps of: positioning two opposing plates defining a capacitor across the predetermined path so that the fluid drop passes between the two plates as it moves through the predetermined path, thereby changing the capacitance of the capacitor; measuring the change in the capacitance of the capacitor as the fluid drop moves through the predetermined path between the two opposing plates; and determining the volume of the fluid drop based on the amount of change of capacitance caused by the fluid drop moving between the two opposing plates. 18. The method of claim 17 further comprising the step of changing the resonance frequency of a resonant circuit in response to the capacitance change caused by a fluid drop moving between the opposing plates; wherein the step of determining the volume of the fluid drop further comprises determining the volum