Diesel fuel combustion systems are being engineered to incorporate one or more new components which may result in the accumulation of {HEAD ~ new, high mass levels} of {TAIL ~ soot} loading in engine lubricating oils 
Diesel fuel combustion systems are being engineered to incorporate one or more new components which may result in the accumulation of { HEAD ~ new , high mass levels } of { TAIL ~ soot } loading in engine lubricating oils
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH