Extreme pressure lubricating compositions and method of using same

A lubricating composition comprising a major amount of a lubricant and a minor amount of a metal salt of trithiocarbonic acid of the form M.sub.2 (CS.sub.3).sub.y, wherein M is ammonium or a metal and y is the valence of M.

A lubricating composition comprising a major amount of a lubricant and a minor amount of the reaction product of a mixture of a metal alkoxide, hydrogen sulfide, and carbon disulfide with said reaction product forming as a result of the reaction of equal moles of carbon disulfide and hydrogen sulfide with 2 moles of the alkoxide moiety.

A lubricating composition comprised of a major amount of a lubricant and a minor amount of a trithiocarbonate complex of the form

• (CI).sub.x (M.sub.z (CS.sub.3).sub.y)
• wherein M is a cationic complex-forming metal, z is the number of atoms of M in the complex, y is the number of trithiocarbonate groups in the complex, CI is a neutralizing counter ion, and x is the number of counter ions necessary to neutralize the complex.

A lubricating composition comprising a major amount of a lubricant and a minor amount of a complex of trithiocarbonic acid, said complex being the reaction product of a mixture comprising an alkali metal salt of trithiocarbonic acid, a cationic complex-forming metallic moiety, and a counter ion.

A lubricating composition comprising a major amount of a lubricant and a minor amount of one or more salts or complexes of trithiocarbonic acid in combination with one or more salts or complexes of tetrathiocarbonic acid.

A lubricating composition comprising a major amount of a lubricant and a minor amount of one or more metal salts of trithiocarbonic acid of the form M.sub.2 (CS.sub.3).sub.y, in combination with one or more salts of tetrathiocarbonic acid of the form M.sub.2 (CS.sub.4).sub.y, wherein M is ammonium or a metal and y is the valence of M.

A lubricating composition comprising a major amount of a lubricant and minor amount of the reaction product of a mixture of a metal alkoxide hydrogen sulfide and carbon disulfide with said reaction product forming as a result of the reaction of equal moles of carbon disulfide and hydrogen sulfide with 2 moles of the alkoxide moiety in combination with one or more metal salts or complexes of tetrathiocarbonic acid.