nā uea puhi
ʻO nā kaula uila kiʻekiʻe he hui paʻa ʻaʻole pilikia i ka mea hoʻohana kaʻa.
ʻO nā kaula uila kiʻekiʻe he hui paʻa ʻaʻole pilikia i ka mea hoʻohana kaʻa. 
Ke hana nei nā kaula uila i nā kūlana paʻakikī - hiki i ka mahana o ka ea i loko o ke keʻena mīkini mai ka liʻiliʻi 30 a hiki i ka 50 degere C, a hoʻololi pū ka haʻahaʻa o ka ea. Hiki iā lākou ke maʻalahi i nā hopena ʻino o nā paʻakai a me nā haumia mechanical. ʻO ka hopena, ua hoʻemi ʻia ka hana ʻōnaehana a ʻaʻole hoʻi i ka ʻala. A hiki i kēia ke alakaʻi i ka hoʻonui ʻana i ka wahie, ka hoʻokuʻu nui ʻana o nā mea ʻawaʻawa i loko o nā kinoea hoʻopau, ka pōʻino i ka lambda probe a me ka catalyst, a me ka mīkini ponoʻī. No laila, pono e nānā i nā kaula no ka pōʻino mechanical, nā ʻāpana o nā "punctures" a me ka oxidation o nā mea.
Manaʻo nā mea hana hose kaulana e hoʻololi iā lākou i kēlā me kēia 80 tausani mau kilomita, a ma nā kaʻa me nā hoʻokomo kinoea i kēlā me kēia 40 tausani mau kilomita.
