Mmanụ aṅụ na-enwekarị ike ịgbanye ọkụ.
Okwu dị mkpa n'okwu a bụ “ebe mgbari,” nke na-ezo aka na okpomọkụ kachasị dị ala nke mmiri mmiri nwere ike ịmịpụta iji mepụta ngwakọta na-enwu ọkụ na ikuku, n'okpuru ọnọdụ ule pụrụ iche. Ebe ọkụ ọkụ nke mmanụ ụgbọala nwere ike ịdị n'okpuru 28 Celsius, tụnyere ìhè diesel, nke sitere na 45 ruo 120 ° C. A na-ekewa ihe ọ bụla nwere ntụpọ ọkụ n'okpuru 61 Celsius dị ka na-ere ọkụ.
Ịkụnye mmanụ dizel n'ọkụ gba ọtọ na-esi ike n'ihi na ebe ọkụ ya dị elu nke ukwuu karịa ihe ambient okpomọkụ nke 20 ° C, na-enye mmanụ dizel dịtụ eguzogide mgbanye.