Kwa injini yayikulu yam'madzi, mphete ya pistoni ndi cylinder liner ndizofunikira kwambiri zosemphana, ndipo kuyendetsa bwino ndikugwira ntchito pakati pawo ndikofunikira kwambiri pa injini yayikulu. Kwa mphete za pistoni zokutidwa ndi aluminiyamu, palibe vuto panthawi yogwiritsa ntchito mafuta a sulfure. Kupatula apo, sulfure yomwe ili mumafuta a sulfure wambiri imathandizira kuyatsa pakati pa mphete ya pisitoni ndi cylinder liner. Pambuyo pogwiritsira ntchito mafuta a sulfure otsika, filimu yamafuta pa silinda ya silinda si yabwino monga kale, ngakhale kuti kugwiritsa ntchito mafuta opangira mafuta opangira mafuta apamwamba sikungathe kuthetsa izi. Izi zipangitsa kuti mphete ya pisitoni yokhala ndi aluminiyamu ikhale yofulumira, zomwe zingakhudze kugundana, kuonjezera kuvala kwa silinda, ndikufupikitsa moyo wautumiki. Ngati mtengo wamtengo wapatali wa mafuta opaka silinda sunachuluke panthawiyi, kuvala kudzafulumizitsa. Pamenepa, kugwiritsa ntchito mphete za cermet pistoni kumathandizira kukana kwa mphete ya pistoni, kuchepetsa kugundana kwamphamvu, kuchepetsa kwambiri kukhudzidwa kwa magwiridwe antchito, ndikutalikitsa moyo wautumiki wa mphete ya pistoni ndi silinda.