5W-30 mubyukuri bisobanura iki?
Si buri wese witaho gusukura no gusana imodoka ye ubwe. Kandi mu by’ukuri, benshi muri twe ntituzi neza ibiri munsi ya kaliteri (hood) y’imodoka yacu, cyane cyane ubwoko bw’amavuta ya moteri dukoresha. Ni yo mpamvu ahantu bakora service z’imodoka n’abakanishi babaho, sibyo? Ariko se, uramutse ukeneye kugura no kongeramo amavuta yawe ubwawe, wakora iki? Ni ubuhe bwoko bw’amavuta wakoresha kandi wabimenya ute usomye ibipapuro byayo? None se SAE 5W-30 bivuze iki?
Igisubizo kigufi: Iyo mibare igaragaza ubukomere (viscosity) bw’amavuta, naho inyuguti W isobanura WINTER (ubukonje).
Igisobanuro kirambuye: Ishyirahamwe ry’Abahanga mu by’Ubukanishi bw’Imodoka (SAE - Society of Automotive Engineers) ryashyizeho uburyo bwo gutondeka amavuta ya moteri hakurikijwe ubukomere bwayo. Kubera ko ubukomere bw’amavuta buhinduka bitewe n’ubushyuhe, amavuta ya multigrade (akora neza mu bushyuhe butandukanye) yakozwe kugira ngo arinde moteri haba mu bukonje no mu bushyuhe bwinshi. Ni yo mpamvu usanga ku icupa ry’amavuta handitse nka SAE 5W-30.
Urugero kuri 5W-30, umubare uri mbere ya W werekana uko amavuta akomereye mu bukonje. Umubare uri hasi ni wo mwiza kuko uba werekana ko amavuta adakomera cyane kandi ashobora gutembera neza mu gihe cy’ubukonje, bityo agafasha moteri kwaka neza iyo ubushyuhe buri hasi. Umubare uri inyuma ya W werekana ubukomere bw’amavuta iyo moteri iri mu bushyuhe bwayo busanzwe bwo gukora.
Mu yandi magambo, 5W-30 ni amavuta agira imikorere myiza haba mu bukonje n’ubushyuhe, bikagirira moteri akamaro mu bihe bitandukanye by’ikirere.
Amavuta ya multigrade nka SAE 5W-30 na 10W-40 akoreshwa cyane kuko, uretse mu bihe bikabije by’ubushyuhe bwinshi cyangwa ubukonje bukabije, aba afite ubushobozi bwo gutemba neza mu bukonje kandi agakomeza gukora neza no mu bushyuhe bwinshi. Mu yandi magambo, guhitamo ubukomere bw’amavuta (viscosity) biterwa n’aho uba. Urugero, umuntu uba muri Finlande yakoresha 0W/5W-30, mu gihe uwaba muri Nijeriya yahitamo 5W/10W/15W-40 cyangwa se 20W-50.
Icyitonderwa: Ibisabwa ku mavuta ya moteri bitandukanye bitewe n’imodoka, ni byiza gusoma igitabo cyayo (car handbook) kugira ngo umenye ubwoko bw’amavuta bukwiye.
