Vuto losasintha sefa ya petulo kwa nthawi yayitali ndi chiyani?
Mafuta amafuta adzasakanizidwa ndi zonyansa zina panthawi yopanga, mayendedwe ndi kuwonjezera mafuta. Zonyansa mumafuta zidzatsekereza jekeseni wa jekeseni wa mafuta, ndipo zonyansa zidzamangiriridwa ku cholowera, khoma la silinda ndi mbali zina, zomwe zimapangitsa kuti pakhale mpweya wa carbon, zomwe zimapangitsa kuti injini ikhale yovuta. Chosefera chamafuta chimagwiritsidwa ntchito kusefa zonyansa mumafuta, ndipo chimayenera kusinthidwa pakapita nthawi kuti chitsimikizire kusefera bwino. Mitundu yosiyanasiyana yosinthira zosefera zamagalimoto idzakhalanso yosiyana pang'ono. Kawirikawiri, fyuluta yakunja ya nthunzi imatha kusinthidwa pamene galimoto imayenda pafupifupi makilomita 20,000 nthawi iliyonse. Zosefera zopangira nthunzi nthawi zambiri zimasinthidwa kamodzi pa 40,000 km.
