Kutumiza mafuta ozizira ntchito
Chifukwa mafuta ali ndi matenthedwe matenthedwe ndipo nthawi zonse amayenda mu injini, kuzizira kwamafuta kumagwira ntchito yoziziritsa mu crankcase ya injini, clutch, ma valve, etc. mutu wa silinda ndi khoma la silinda, ndipo mbali zina zimazizidwabe ndi choziziritsira mafuta.