Zochita zamtundu wa S11-M zosinthira zomizidwa zonse zomizidwa ndi mafuta zimagwirizana ndi Miyezo ya IEC.Pakatikati pake amapangidwa ndi pepala la silikoni lozizira kwambiri ndipo ndi lopanda miter yokhazikika ndipo koyilo yake imapangidwa ndi mkuwa wopanda mpweya wabwino.Imatengera tanki yamafuta a radiator yamtundu wamalata kapena mtundu wokulitsa.
Popeza sichifunikira chosungira mafuta, kutalika kwa thiransifoma kumachepetsedwa, ndipo mafuta osinthira samalumikizana ndi mpweya, kukalamba kwamafuta kumachepetsedwa, motero kumatalikitsa moyo wautumiki wa thiransifoma.
Izi zimagwiritsidwa ntchito kwambiri pomanganso gululi yamagetsi, chigawo chogona, fakitale, nyumba zokwera kwambiri, fakitale yamigodi, hotelo, malo ogulitsira, eyapoti, njanji, malo opangira mafuta, wharf, msewu waukulu ndi malo ena akunja.