Hiki i ka ʻaila kaumaha ke puhi, akā na'e, pa'akikī kona haku 'ana i ka māmā a ke'ake'a i ka ho'opau 'ana. Eia naʻe, i nā kaiapuni me ka nui o ka oxygen, hiki ke puhi ka aila kaumaha.
ʻAila lubricating, oiai hikiwawe, ʻAʻole ia e ʻā i ka pili ʻana me kahi lapalapa e like me ka hiki ke manaʻo ʻia. Hoʻopili ia i kahi hopena oxidation, he akahai ka ikaika.