The lubricating compositions of {HEAD ~ the present invention} comprise a major amount of an oil of lubricating viscosity and {TAIL ~ a minor amount} of the silver protective synergistic combination of the present invention 
comprise
The lubricating compositions of { HEAD ~ the present invention } comprise a major amount of an oil of lubricating viscosity and { TAIL ~ a minor amount } of the silver protective synergistic combination of the present invention
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH