The additive will then enhance {TAIL ~ the operation} of {HEAD ~ diesel fuel combustion systems} by improving, for example, wear inhibition, lubricant oil life, and fuel economy 
The additive will then enhance { TAIL ~ the operation } of { HEAD ~ diesel fuel combustion systems } by improving , for example , wear inhibition , lubricant oil life , and fuel economy
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH