Umuguzi akoresha irwariritse yumurongo uzunguruka kugirango ugenzure ibisohoka amavuta, irwanya ni ndende cyane kuburyo urutiha rushobora gukoreshwa gusa niba ari hejuru ya 2.0mpa. Hano hari imyanya 2 - 6 irahari kubisohoka amavuta hamwe namavuta yakoreshejwe ni N22 # - N320 # lubricant na 0 # - 00 # Gusigambere.