Mafuta oipitsidwa ndi chimodzi mwazinthu zomwe zimayambitsa kuwonongeka ndipo nthawi zambiri zimayambitsa kutha msanga kwa kubala.Pamene berelo ikugwira ntchito m'malo oyera, iyenera kulephera chifukwa cha kutopa kwachilengedwe, koma ikaipitsidwa, imatha kufupikitsa moyo wobala.

Mafuta amatha kuipitsidwa ndi tinthu takunja kuchokera kuzinthu zambiri zomwe zingatheke.Ngakhale fumbi laling'ono, dothi kapena zinyalala zitha kuwononga filimu yamafuta mokwanira kuti iwonjezere kuvala pa bere ndikukhudza magwiridwe antchito a makinawo.Pankhani ya zoipitsa magawo, kuwonjezeka kulikonse kwa kukula, kukhazikika, ndi kuuma kumakhudza kuvala.Komabe, ngati mafutawo sakuipitsidwanso, kuchuluka kwa kuvala kumachepa, popeza tinthu tating'ono takunja timadulidwa ndikudutsa mu dongosolo panthawi yogwira ntchito.

Ndikofunika kukumbukira kuti kuwonjezeka kwa kukhuthala kwa mafuta kungachepetse kuvala kwamtundu uliwonse wa kuipitsidwa.

Madzi ndi owononga kwambiri ndipo ngakhale madzi amadzimadzi monga madzi glycol amatha kuwononga.Madzi ochepera 1% mumafuta amatha kusokoneza moyo.Popanda zisindikizo zoyenera, chinyezi chimatha kulowa m'dongosolo, kuchititsa dzimbiri komanso ngakhale hydrogen embrittlement pa ming'alu yomwe ilipo.Ngati ming'alu yaying'ono, yomwe imabwerezedwa ndi kubwereza zotanuka kupsinjika kwanthawi yayitali, imasiyidwa kuti ifalikire kukula kosavomerezeka, kumapangitsa kuti chinyezi chilowe m'dongosolo ndikupitilira kuzungulira koyipa.

Chifukwa chake, kuti mukhale wodalirika kwambiri, onetsetsani kuti mafuta anu onyamula amakhala oyera chifukwa ngakhale mafuta abwino kwambiri pamsika sangasungire katundu pokhapokha atakhala opanda zowononga.