Anyị nwere ọtụtụ ndị ahịa dị ukwuu na ịkwalite, qc, na ịrụ ọrụ na ụdị nsogbu nsogbu na-eweta nsogbu n'ime usoro ọgbọ mmiri na-enye ọgbọ ahụ ọkụ. Greunde mmiri, Mgbapụta lipbric, Nnukwu olu gluase,Sistemụ lubrication. Corlọ ọrụ anyị na-echekwa ihe egwu - Nchọba ụlọ ọrụ na-akwụwa aka ọtọ yana ịkwụwa aka ọtọ ijigide ogologo oge - Oge Mkpakọrịta na ndị ahịa anyị. Ngwaahịa ahụ ga-enyefe ụwa niile, America, Australia, Mauritius, Ireland, na-eme ka ọ dị mma "