Amafutha avuthayo asetshenziswa lapho isitshalo sokuxuba i-asphalt sisebenza, kodwa uwoyela ovuthayo uhlukaniswa ngamamaki ahlukene. Ukusetshenziswa okufanele kuyisihluthulelo sokubamba kwethu. Okulandelayo yizicaciso zokusetshenziswa kwamafutha avuthayo ezitshalweni zokuxuba i-asphalt, sicela uqiniseke ukuthi uyathobela.

Ngokwamabanga ahlukene e-viscosity, uwoyela ovuthayo ungahlukaniswa ngamafutha alula namafutha asindayo. Amafutha alula angathola umphumela omuhle we-atomization ngaphandle kokushisisa, kuyilapho uwoyela osindayo kufanele ushiswe ngaphambi kokusetshenziswa ukuze kuqinisekiswe ukuthi i-viscosity yawo ihlangabezana nobubanzi obuvunyelwe bezinto zokusebenza. Akufanele nje kuphela izici zamafutha zibe yingcweti, kodwa idivayisi kufanele futhi ihlolwe, ilungiswe futhi ihlanzwe ukuze igweme ukuvinjelwa komlilo namafutha.
Ukwengeza, ngemva kokuqedwa komsebenzi, inkinobho yokushisa kufanele ivalwe kuqala, bese ukushisa kwamafutha okunzima kufanele kuvaliwe. Uma kudingekile ukuvala isikhathi eside noma uma kubanda, i-valve yesifunda samafutha kufanele ishintshwe futhi isifunda samafutha kufanele sihlanzwe ngamafutha alula, ngaphandle kwalokho kuzokwenza ukuthi isifunda samafutha sivinjwe noma kube nzima ukuvutha, okuyinto engathandeki kakhulu ekusebenzeni kwayo yonke isitshalo sokuxuba i-asphalt.