• Na mgbakwunye na akụkụ "ọrụ a" nke ogwu ahụ, ogwu ahụ gụnyere ihe ndị dị ka ethylene glycol (antifreeze), formaldehyde (anụ ahụ a maara) na aluminom. 
* Na mgbakwunye na akuku "oru a" nke ogwu ahu, ogwu ahu gunyere ihe ndi di ka ethylene glycol (antifreeze), formaldehyde (anu ahu a maara) na aluminom. 