Silver protection in {TAIL ~ lubricant compositions} is afforded by the combination of organo sulfur compounds and hydrocarbon substituted {HEAD ~ 1,2,4 triazoles}, the latter being obtained by reaction of a substantially aliphatic, substantially saturated hydrocarbon substituted dicarboxylic acid with an aminoguanidine compound 
Silver protection in { TAIL ~ lubricant compositions } is afforded by the combination of organo sulfur compounds and hydrocarbon substituted { HEAD ~ 1,2,4 triazoles } , the latter being obtained by reaction of a substantially aliphatic , substantially saturated hydrocarbon substituted dicarboxylic acid with an aminoguanidine compound
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH