As a method, the invention is directed to {HEAD ~ the protection} of silver engine parts in {TAIL ~ an internal combustion engine} by lubrication thereof with the above described lubricating composition 
As a method , the invention is directed to { HEAD ~ the protection } of silver engine parts in { TAIL ~ an internal combustion engine } by lubrication thereof with the above described lubricating composition
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH