The diesel fuel combustion system operation is enhanced by improving {HEAD ~ the attributes} of lubricating {TAIL ~ oil} loaded with the combustion byproduct soot particles 
The diesel fuel combustion system operation is enhanced by improving { HEAD ~ the attributes } of lubricating { TAIL ~ oil } loaded with the combustion byproduct soot particles
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH