I-fuel filter iyingxenye ebalulekileyo yenkqubo ye-fuel, isetyenziselwa ukususa ukungcola okuqinileyo njenge-iron oxide kunye nothuli oluqulethwe kumafutha, ukuthintela ukuvinjelwa kwenkqubo yamafutha (ngokukodwa i-injector ye-fuel), ukunciphisa ukunxiba komatshini, ukuqinisekisa ukusebenza kwe-injini ezinzile. , kunye nokuphucula ukuthembeka. Kwangaxeshanye, izihluzi zepetroli zinokunciphisa ukungcola kwipetroli, ziyenze ikwazi ukutshisa ngokufanelekileyo kwaye iphucule ukusebenza kakuhle kwamafutha, okubalulekileyo kwiinkqubo zanamhlanje zamafutha.