Nō te whakarāpopoto o ngā wāhi pūnui mō ngā tīwai nui i roto i tō tātou kohinga, he iti noa iho i te 300 ki te 600 litā mō ngā hokomaha taiao matua, me ngā wāhi pūnui tuatahi hei whakatōpana i te rahi ake ki te 1,000 litā. Hei tauira, ko te hokomaha Dongfeng 13L e āwhina ana i tētahi wāhi pūnui matua o 400L e whai ana i tētahi roa haere o āprokemati 1,200 km i raro i ngā tikanga whakahaere mōrena. Mō ngā tono hokomaha taiao e hiahiatia ana te roa whakamahere, ka taea te whakauru i tētahi wāhi pūnui tuatahi o 200L, e whai ana i te rahi i waenganui ki te 600L me te whakapae i te roa ki te 1,800 km. Ka whai ngā hokomaha hanga whare e hīmata ana i ngā tangata ki ngā wāhi mahi i ngā wāhi pūnui o 350L hei whakarite i te whakaaro pūnui me te hiahia mō ngā waehere ā-wāhanga. Ko ngā momo whenua o ngā wāhi pūnui ko te inoxihana tohu rangatira rānei, ko te steel karboni me ngā kupu whakatakoto anti-corrosion, ā, kei runga i ngā wāhi pūnui katoa i ngā tirotiro rahi pūnui, i ngā rāhui kuhukuhu, ā, i ngā pūnaha whakamutunga taihoa hei whakamau i te pūnui. Tuku kōrero ki ō tātou tohunga pūnui mō ngā whakarāpopoto wāhi pūnui, īnāianei ko ngā huongā, ko ngā whakaaetanga whakawhiti, ā, ko te whakaaetanga ki ngā pūnui kē pērā i te biodiesel (ki te B20 blend).