Abstract: A biodegradable two-cycle oil composition which comprises a C.sub.13 oxo alcohol adipate in admixture with a dispersant and a lubricity agent; it is especially useful for outboard marine engines.

Abstract: The present invention provides functional fluid compositions containing a major portion of oil of lubricating viscosity and a novel and synergistic combination of an acylated nitrogen-containing compound having an oil soluble olefinic substituent averaging in carbon number from 8 to 20 and at least one ashless detergent/dispersant.

Abstract: An improved rechargeable, high energy density electrochemical cell comprises an anode, an electrolyte of an ionic salt dissolved in an aprotic organic solvent and a composite cathode structure of a cathode-active material and a metal, the metal being reactive with the cathode-active material to form on the metal an impervious conductive film of a mixture of compounds of the cathode-active material and the metal, which film remains impervious during both charging and discharging. A specific example includes a rechargeable, high energy density battery consisting of a lithium anode, an electrolyte of lithium perchlorate dissolved in dioxolane, and a cathode of titanium disulfide and aluminum.