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