to cyclopentyl cyclohexyl cycloheptyl methylcyclopentyl methylcyclohexyl methylcycloheptyl cyclopentenyl cyclohexenyl cycloheptenyl methylcyclopentenyl methylcyclohexenyl methylcycloheptenyl groups and the like preferred compounds are oil soluble having alkyl groups containing 1 to 24 carbons and more preferably 4 to 8 carbons the most preferred is antimony diamyldithiocarbamate antimony diamyl dithiocarbamates generally comprise 0 5 to 3 and more preferably 1 to 2 mass percent of the final grease composition final grease compositions preferably contain 0 07 to 0 45 and most preferably 0 15 to 0 30 mass percent antimony in this invention the load carrying capability of greases containing antimony dithiocarbamate with respect to its ep performance is improved by the incorporation of antimony dithiocarbamate compositions containing ammonium dithiocarbamate and or zinc dithiocarbamate ammonium and zinc dithiocarbamates are not ep additives by themselves but the incorporation of these compounds significantly improves the load carrying ability of greases treated with antimony dithiocarbamates while allowing for a reduced amount of required antimony one advantage of using ammonium and zinc dithiocarbamates is that their incorporation can be accomplished in situ in the antimony dithiocarbamate manufacturing process as depicted in fig1 ammonium dithiocarbamates are intermediate products in the preparation of antimony dithiocarbamates thus the level of ammonium dithiocarbamate in a composition is controlled by the stoichiometry of the reaction this invention teaches that ep performance is improved when antimony dithiocarbamates are produced using an excess of carbon.