Abstract: A high energy, high density synthetic liquid hydrocarbon fuel, RJ-6, is pared by blending 60 weight percent perhydrodinorbornadiene, a synthetic fuel known as RJ-5, and 40 weight percent exo-tetrahydrocyclopentadiene, a synthetic fuel known as JP-10. This fuel is particularly suitable for use in air launched ramjet engine applications such as aircraft missile systems. This new fuel substantially meets the desirable viscosity, energy content, and flash point of the previously employed synthetic fuel blend while exhibiting superior storage characteristics in elastomeric fuel systems used in missile applications.

Abstract: Hydrocarbon fuel compositions containing at least one divalent tetracoordinated cobalt compound represented by the structure ##STR1## wherein: R.sub.1, R.sub.2 and R.sub.3 are each independently selected from hydrogen and C.sub.1-6 alkyl, andR.sub.4 is a branched C.sub.3-6 alkyl wherein the branching is on either or both of the number 1 and 2 carbon atoms of said alkyl group.

Abstract: A solid lubricant consisting of metals combined with a high lubricity salt fabricated in pellet form and introduced into the fuel reservoir of an internal combustion engine. The pellet slowly disintegrates to produce extremely minute solid particles which are dispersed in the fuel and delivered to the fuel-contacting engine parts of the engine to deposit a lubricant film thereon.