Kusintha kwamafuta/madzi ndi chida chofunikira powunika kuchuluka kwa mafuta kapena madzi m'matanki pamagwiritsidwe osiyanasiyana. Zimagwira ntchito kudzera mu makina oyandama omwe amayenda ndi mulingo wamadzimadzi. Choyandamacho chikafika pamlingo wokonzedweratu, chimatsegula chosinthira, kutumiza chizindikiro ku dongosolo lolamulira. Chizindikirochi chikhoza kuyambitsa zinthu monga kuyambitsa mpope, kutseka valavu, kapena kuchenjeza wogwiritsa ntchito. Zopangidwa kuchokera kuzinthu zolimba, chosinthiracho chimapangidwa kuti chizitha kupirira zovuta.