Ni iki gitandukanya amavuta ya moteri y’imodoka y’amasiganwa n’amavuta ya moteri y’imodoka zisanzwe?

Moteri z’imodoka zisanzwe zakorewe gutwarwa neza kandi zigomba kumara igihe kirekire. Ibi bituma imbaraga zikwirakwizwa muri RPM zitandukanye (revolutions per minute) kugira ngo habeho kuzamuka k’umuvuduko mu buryo bukurikije. Moteri mu modoka y’amasiganwa igomba gukomeza guhangana n'ibibazo byinshi. Izi moteri akenshi zikoreshwa no gutunganywa kugira ngo zitange imbaraga nyinshi na torque mu RPM yo hejuru. Zirema ubushyuhe n’umuvuduko utavuka mu modoka zisanzwe. Ibi ni ibintu bisaba byinshi kuri moteri, bityo amavuta akwiye kubahirizwa muburyo bwo kuyirinda

Amavuta ya moteri "asanzwe" yakozwe kugira ngo isukure, irinde, kandi igabure amavuta ya moteri mu gihe cy’intera ingana na 20,000 km. Agomba kugira imiterere nko kurinda kwangirika, igihe kirekire cy’amavuta, kubungabunga imikoreshereze ya lisansi, kurinda kwikubanaho, no kurwanya kwangirika kwa ogisijeni(oxidation). Ku rundi ruhande, amavuta ya moteri y’imodoka y’amasiganwa ahindurwa kenshi, nyuma y’isiganwa rimwe cyangwa bibiri. Oxidation y’amavuta ya moteri yikuba kabiri buri kigereranyo cya 10°C cy’ubushyuhe bw’amavuta, kandi mu modoka y’amasiganwa ubushyuhe busanzwe buruta cyane ubwo bw’imodoka zisanzwe. Ikindi kandi, kuko moteri y’imodoka y’amasiganwa ikora ku mikorere myinshi no kwihanganira pressure, ikeneye kurindwa by’umwihariko mu guhangana n'uburyo ibice byangirika. Izi ni inyongera zinyuranye n’izindi nka ZDDP (Zinc Di-alkyl Di-thio Phosphates) zifite uruhare mu kurinda amakosa akomeye y’umutwe wa valvu n’icyuma cy’amashanyarazi. Ibindi bikozwe birimo kugabanya ingufu z'ubushyuhe nka Molybdenum Di-alkyl Di-Thio Carbamates bikoreshwa kugira ngo gukubanaho hagati y’ibice byose bya moteri y’imodoka. Ubushobozi busanzwe bw’ibikoresho byo gusukura muri ayo mavuta bushobora guhangana n'ibi bikoresho byihariye bikoreshwa cyane muri moteri z’imodoka y’amasiganwa, kandi kenshi ubona ibipimo bito kuri TBN (Total Base Number).

Ubwoko busanzwe bw’amavuta y’amasiganwa ni urwego rwa viskosite 10W-60 hifashishijwe umurongo wa PAO ufitanye isano n’ibipimo bya Group IV, hakoreshejwe full-synthetic. Ariko kandi, hariho uruvangitirane rw’amavuta atarakoreshwa. Icyemezo cy’ingenzi ku mavuta y’amasiganwa ni ibisabwa bya viskosite ya HTHS (High Temperature/High Shear) ya mPas nibura 3.7, igaragaza ubushobozi bwo guhangana n’ibihe bogoranye by’amavuta buruta ubusanzwe bw’umwanya wa API cyangwa ACEA aho ibisabwa byinshi ari mPas nibura 3.5.

Nk’uko imodoka z’amasiganwa zakorezwe n’umutwe wihariye w’akazi uzitandukanya n’imodoka zisanzwe, ni ko amavuta ya moteri y’amasiganwa agomba gukorwa kandi aguhura n’ibisabwa by’imodoka y’amasiganwa, bityo akaba afite imiterere itandukanye n’amavuta asanzwe ya moteri.