5w40 Bei zinaanzia 20,000-35 @ litre kutegemeana na kampuni unayotaka binafsi kwa sasa nauza brand 6 tu za multipurpose oil ambazo niToyota Passo (YoM 2006)
Engine: K3-VE, 1290cc, piston 4.
Odometer: 80,000+ km
Naomba ushauri ninunue ENGINE OIL gani. Gharama zake unauzaje.
Oil zinatofautiana mkuu..kuna oil for ajili ya engine ya injini za magari, mashine nk..oil za kwenye injini za gari kuna za kutumika kwenye injini ya Petrol na Diesel (zinatofautiana kwenye kitu kinaitwa API rating) na hizi oil za injini za magari kuna mono grade(mfano SAE40) na kuna multi grade (mfano 5w-30,0w-20,20w-50.......) Na kwa hizi mono or multigrade nazo zimegawika katika makundi matatu..kuna mineral oil, kuna semi synthetic oil na kuna fully synthetic oil..haya makundi matatu kinacho tofautisha ni ingredients za additives...(and all oil nilizo zitaja hapo juu zinakua zinatumika kwenye injini zenye 4 stroke piston movement...so kwa injini yenye 2-stroke piston movement inakua na oil yake special ambayo ipo designed kwa 2 stroke injini maana oil hii inakua inachanganywa kwenye tank la mafuta machine yenyewe mfano zile chain saw, kuna vile vi generator vidogo, kuna pikipiki pia za two stroke.Hizo multipurpose ndio Full Synthetic ama nachanganya madesa?
Namaanisha kwanini zinaitwa multipurpose! Kwamba unaweza kuitumia kwenye engine ya gari na engine ya mashine za migodini?
Unamaanisha ukitembea kms nyingi ubadilishe oil type hata kama manufacturer ka recomend hiyo? Mfano mimi kwenye manual book manufacturer ka recommend 5W-30
Kama engine haili oil, haina haja ya kubadilisha..huwa tunabadilisha pale engine inapopungua oil pressure na kula oil..hii inakuwa ni suluhisho la muda..ila mwisho wa siku engine itahitaji rebuild..itabidi utafute bearings nene..Gari yangu ni VITS Iina zaidi ya km 240,000 je nitumie oil gani.
Wenzetu wanatunza magariSiyo kweli. Ingie kwenye mitandao ya magari Japani angalia gari nyingi ni zipi kati ya zilizotembea below 50k kms,100k km, na above 100k kms
Tunajivunia maendeleo yetuTabia yake
Oil inakuwa nyepesi jinsi inayopata joto na kuwa nzito jinsi inavyopoa. Kwahiyo kufahamu viscosity sahihi kwenye cold start na operating temperature ni muhimu!
Viscosity ni resistance ya oil kuflow.. Kwahiyo oil yenye viscosity kubwa ni ngumu kuflow hence nzito zaidi..!
Kazi yake
Kulainisha msuguano wa vyuma ndani ya engine!
Oil pump inaizungusha oil kwenye sehemu za engine kama damu inavyozungushwa kwenye mishipa..
Wakati inarudi kwenye sump inakutana na oil filter ambayo inachuja uchafu na kuhakikisha oil inavyozungushwa ipo vizuri.
Sump huwa inakuwa chini kabisa ya gari, as gari inatembea cold air inapooza oil kwenye sump na kusaidia kutoa joto kwenye engine.
Aina zake
Mineral oil - hii inatokana na kuchujwa kwa crude oil..haina mambo mengi kwenye uzalishaji wake..molecules zake hazipo uniform.. Kwahiyo flow sio nzuri..bei ipo chini.. Interval ya service nayo ni karibu karibu..!
Semi Synthetic na Synthetic oil - hizi zipo very refined.. Hasa hasa synthetic.. Ni oil zinazotengenezwa LAB kwa formula.. Kwahiyo molecules zake zipo uniform.. Flow inakuwa nzuri. Interval yake unaenda kilometers nyingi..
Hapa panahitaji umakini.. Oil inaweza kuwa nzuri kwa kilometers nyingi ila oil filter isiwe na uwezo wa kwenda kilometers nyingi.
Grading ya Oil
Oil imekuwa graded na hawa SAE kwenye makundi 2. Monograde na Multigrade.
Mono kama jina lake.. Ina viscosity moja throughout. Wakati Multi ni zaidi ya moja.
MFANO wa Monograde SAE40.. Hii inakuwa na viscosity ya 40 kuanzia cold start mpaka operating temperature.. Kwahiyo ukiwasha gari inabidi uipe muda kidogo ili oil ipande vizuri kwenye engine.. Unaweza ukawasha gari then ukaenda kuoga.. Mpaka ukitoka mambo yamekaa sawa.
Hizi zinafaa kwa mazingira ambayo hakuna temperature change kubwa kwenye seasons kama hapa TZ..!
Mfano wa Multigrade 5W40.. Hii inabehave kama oil ya 5 viscosity kwenye cold start na 40 viscosity kwenye operating temperature.
Kwahiyo ukiwasha tuu gari. Oil itapanda chap kwenye engine haihitaji kusubiri muda. Hizi zinafaa kwenye mazingira yenye mabadiliko makubwa ya temperature ndani ya mwaka.
Hii inapunguza usumbufu wa kubadilisha oil wakati wa winter na summer.
0W40 ni nyepesi zaidi ya 5W30 kwenye winter(cold start) ila ni nzito zaidi kwenye summer(operating temperature).!
Ukiikuta gari hivyo ongeza laki 1Odo za kibongo zimechezewa mkuu. Jamaa kanunua gari yard ina 45k km
Sasa atakupaje wakati anajua kuna taarifa muhimu😂😂😂Fraud kamaa hizi ni rahisi kuzingundua... Ukitaka kununua gari yard za bongo... Mwambie muuzaji akupe file lenye auction details kutoka huko gari liliko toka.. utaona auction rating, utaona odo zake wakati inauzwa, utaona service history na kama imewahi pata accident au lah
Wenyewe wanakwambia 5W-30 inafaa kwenye nchi za baridi kama huko ulaya, huku bongo kwa kuwa kuna joto kali na gari zenyewe zina millage zaidi ya 100,000km basi oil sahihi ni 20W-50. Hatari sana hawa local fundi.
Hahahahaha hilo tatizo inaweza kuwa gear slipping ndio inasababisha RPM zirukeMfano nimecheki oil ya gearbox bado iko na rangi nyekundu...
Nimecheki ya engine ndo nyeusi halafu iko na harufu ya petrol...
Pia naona bomba ya moshi ni kama inavujisha upepo...
Yaani unakuta unatembea spidi 40 lakini rpm inaenda hadi 3 huko....
5w40 Bei zinaanzia 20,000-35 @ litre kutegemeana na kampuni unayotaka binafsi kwa sasa nauza brand 6 tu za multipurpose oil ambazo ni
liquimolly
Castrol
Puma
total
oryx
Atlantic plus oil za kutoka kwenye makampuni ya magari husika ex
Benz
Bmw
Toyota
Nissan
etc karibu sana
Hydraulic oil kwa ajili ya nini ? Gari haitumii hydraulic bana , usisikilize maneno ya mitaani, kama ni kwa ajili ya steering au gearbox inatumia ATF ( AUTOMATIC TRANSMISSION FLUID ) , angalia kwenye mfuniko wa wa hapo unapotaka kuongeza wameandika ATF type.Msaada Kaka. Gari Crown Athlete 2004 Hydraulic oil gani most preferable!?
Hydraulic oil kwa ajili ya nini ? Gari haitumii hydraulic bana , usisikilize maneno ya mitaani, kama ni kwa ajili ya steering au gearbox inatumia ATF ( AUTOMATIC TRANSMISSION FLUID ) , angalia kwenye mfuniko wa wa hapo unapotaka kuongeza wameandika ATF type.
Hydraulic hutumika kwenye jacks, etc
Mkuu nilikuwa natumia SAE 40 hivyo unanishauri nitumie 5w 40Kama engine haili oil, haina haja ya kubadilisha..huwa tunabadilisha pale engine inapopungua oil pressure na kula oil..hii inakuwa ni suluhisho la muda..ila mwisho wa siku engine itahitaji rebuild..itabidi utafute bearings nene..
Na kwenye kubadilisha maintain number ya kwanza(cold start viscosity ibaki sawa) then ongeza ya pili(operating viscosity)..5w30 nenda 5w40.. na sio 10w30..
Imagine unatumia oil SAE40 kwenye modern engine...asiee, si mchezo..yaan cold temperature ya injini during cold start kwa dsm haifiki hata 30°c lakini mwanawane ukawa unaitundika engine yako mono grade oil ya SAE 40....duh.. this oil is too thick...tumia hiyo 5w-40 huweze kuvuna advantage ya good oil flow at low temperature during cold start, but inayoweza maintain thickness inapokua exposed to high temperature consistently.Mkuu nilikuwa natumia SAE 40 hivyo unanishauri nitumie 5w 40
Umeelezea vizuri sana mkuu maswala ya oil nilichomaanisha hapo juu hakipo tofauti sana na haya maelezo yako labda niongezee zaidi nilichotaka kusema, nilisema nauza brand 6+1 za oil ambazo ni multipurpose nilikua nikimaanisha nauza oil kutoka kwenye makampuni 7 ambayo oil zake zinaingia kwenye gari ya brand yoyote Ile duniani, mfano Castrol inatumika kwenye magari yote ya Toyota, nissan, BMW etc lakini nauza pia oil za kutoka kwenye specific brand ya gari mfano oil za Benz ambazo zinatumika kwenye gari za Benz tu, na sio sehemu yoyote Ile ,Nisisitize oil ambazo nauza dukani kwangu ni...Oil zinatofautiana mkuu..kuna oil for ajili ya engine ya injini za magari, mashine nk..oil za kwenye injini za gari kuna za kutumika kwenye injini ya Petrol na Diesel (zinatofautiana kwenye kitu kinaitwa API rating) na hizi oil za injini za magari kuna mono grade(mfano SAE40) na kuna multi grade (mfano 5w-30,0w-20,20w-50.......) Na kwa hizi mono or multigrade nazo zimegawika katika makundi matatu..kuna mineral oil, kuna semi synthetic oil na kuna fully synthetic oil..haya makundi matatu kinacho tofautisha ni ingredients za additives...(and all oil nilizo zitaja hapo juu zinakua zinatumika kwenye injini zenye 4 stroke piston movement...so kwa injini yenye 2-stroke piston movement inakua na oil yake special ambayo ipo designed kwa 2 stroke injini maana oil hii inakua inachanganywa kwenye tank la mafuta machine yenyewe mfano zile chain saw, kuna vile vi generator vidogo, kuna pikipiki pia za two stroke.
Pia kuna oil zipo designed kutumika kwenye gears zinazo umana..mfano kwenye gari yenye dif nyuma (rear differential) na kwa gari zenye four wheel or all wheel drive kuna kitu kinaitwa transfer-case (nayo ina oil yake maalumu na watu wengi huwa hawabadilishi oil hii matokeo yake gari ina anza kuzingua uki engage gia-mfano kwa wale wenye rav4 old kuna ugonjwa unaitwa kiduku, huu ni ugonjwa unaosabibishwa na kuto change transfer-case oil).
Kwenye issue ya multi purpose oil nadhan anayo zungumzia mchangiaji hapo juu nadhan alimaanisha oil inayoweza kutumika kwenye gari ya petrol or diesel...
Something to note: wakati wa kununua oil ni muhimu ujue wanunua oil inayoendana na aina ya mafuta gari inatumia..mfano kama gari inatumia petrol nunua oil ambayo ni designed kutumika kwenye gasoline engine (5w-40 ya gasoline engine) or (5w-40 ya diesel engine) why this? Issue ni hivi combustion process inapofanyika by-product yake huwa ni carbon sasa zinapokua zinazagaa kwenye injini, some of these carbon byproduct zinasafishwa na oil, nyingine zinaenda kua treated kwenye catalytic converter(kibongo twaita masega) (kwa gari za petrol) for emissions control, but kwa gari ya diesel kwasababu mfumo wake wa uchomaji maguta ni tofauti na petrol, hizo hata byproduct yake after combustion inakua treated tofauti kidogo na ndipo oil zinazokua designed for diesel engine zinapokuja, and for emissions control ya diesel engine by product utakuta kuna fluid inatumika kwenye diesel engine kwenda ku - neutralize zile byproduct (hii fluid inatwa AD-BLUE) katika engine zote mbili hizi byproduct neutralization inafanyika kwenye exhaust system ...ambapo kwa gari za petrol chemical reaction zinatokea kwenye catalytic converter ambapo kuna very precious metals zinazo react na byproduct za gasoline combustion na ndo maana kuna wizi mkubwa wa masega, na kwa gari ya diesel zina add-blue fluid ambayo ndo inafanya kazi ya catalytic converter.
Sasa kama wanunua multipurpose oil maana yake itakua na uwezo wa kufanya kazi kwenye injini ya petrol na Diesel but ni injini zenye four stroke piston cycle (yaan intake stroke, compression stroke, power stroke, then exhaust stroke) kama za magari..but sina uhakika kama multi purpose oil yaweze tumika kwenye 2 stroke engine- power stroke na exhaust stroke.
Na multi purpose oil haiwezi tumika kwenye differential na transfer case.
Na mashine za mgodi this too general statement, maana kwa mgodi kuna mashine nyingi, je ipi specific maana kila moja ina specific oil inayohitajika..na kwakua mashine nyingi za mgodi zina run at higher rpm for engine torque multiplication so hata oil zitakua zinatumia oil thick kidogo (above 20w-50) na kwa mashine oil changing interval huangalii kilometers bali una fanya oil change kwa hours machine imefanya kazi.
Sijui kama nimejibu as expected and within scope ya issue yako.
Nadhani haujafahamu tofauti ya Synthetic Oil na Mineral oil. Hizi mbili ni tofauti sana hata kwenye durability.No problem mkuu....but it is all about choice mkuu hadi km 15,000 km kama manufacturer anavosema...but know that oil mpaka inafika km 8000+ imesha breakdown sana...kumbuka oil si kilometers, but to what extent imekua subjected to heat ili ku oxidize... So unaweza tembea hata km 2000 but under heavy application oil itakubidi uitoe umwage, au unaweza tembea km 2000 kwa mwaka lakini kama hazi 2000 km ni za short distance yaan zima washa zima washa gari, basi oil hii itakubidi ndani ya miezi sita utoe kwakua itakua na gasoline contamination so ita breakdown na kutofaa kwa matumizi ya lubrication.
Pia unaweza kua na km chache lakini injini ina masaa mengi ina operate bila gari kutembea..so people dont consider this, they only consider distance gari imetembea na si muda injini imefanya kazi..my friend.
Kingine gari nyingi zinazokuja bongo zinakula oil so oil haiwezi kaa kwenye same level after 1000+km..so after unakuta km 2000 lazima uongeze oil angalua kiasi kadhaa.. lakini nini chanzo cha hili tatizo..unakuta chanzo kina rudi kwenye oil change interval..oil change interval ikiwa ndefu oil u break down na kufanya itengeneze vitu kama ukoko, huu ukoko hung'ang'ania rings za pistons (zinazo scrap oil kwenye cylinder walls) (pia oil rings za modern cars because of emissions standard na ku increase engine efficiency, zinakua low tension) sasa rings zikisha ng'ang'ania basi oil inakua haina kizuizi cha kuifanya isifike kwenye combustion chamber..so inakua burnt together with fuel kwenye combustion chamber.
So my good friend change oil after every 3000km or 3000miles kama watumia synthetic oil.
Kumbuka oil is cheaper kuliko engine.
Don't be deceived by marketing words za hizi brand mbalimbali za oil kwamba hizi oil zaenda km nyingi bila kukuambia under what conditions hizi oil zinaweza tembea umbali wote huo..,kumbuka at times utapokua unahangaika kutengeneza gari lako because of these myth za brands you will be alone, and marketing people will no be there.
Sent from my TECNO KC8 using JamiiForums mobile app
Ooh kumbe? Kwamba sifahamu tofauti ya fully synthetic oil,semi synthetic oil na mineral oil? Ok!Nadhani haujafahamu tofauti ya Synthetic Oil na Mineral oil. Hizi mbili ni tofauti sana hata kwenye durability.
Gari yangu na oil yangu natumia miezi isiyozidi 8 gari hata ukipark kwa miezi 10 hiyo oil ukamwage. But aina ya oil yangu ni classic nitakuwa mjinga kutumia kms 3,000.No problem mkuu....but it is all about choice mkuu hadi km 15,000 km kama manufacturer anavosema...but know that oil mpaka inafika km 8000+ imesha breakdown sana...kumbuka oil si kilometers, but to what extent imekua subjected to heat ili ku oxidize... So unaweza tembea hata km 2000 but under heavy application oil itakubidi uitoe umwage, au unaweza tembea km 2000 kwa mwaka lakini kama hazi 2000 km ni za short distance yaan zima washa zima washa gari, basi oil hii itakubidi ndani ya miezi sita utoe kwakua itakua na gasoline contamination so ita breakdown na kutofaa kwa matumizi ya lubrication.
Pia unaweza kua na km chache lakini injini ina masaa mengi ina operate bila gari kutembea..so people dont consider this, they only consider distance gari imetembea na si muda injini imefanya kazi..my friend.
Kingine gari nyingi zinazokuja bongo zinakula oil so oil haiwezi kaa kwenye same level after 1000+km..so after unakuta km 2000 lazima uongeze oil angalua kiasi kadhaa.. lakini nini chanzo cha hili tatizo..unakuta chanzo kina rudi kwenye oil change interval..oil change interval ikiwa ndefu oil u break down na kufanya itengeneze vitu kama ukoko, huu ukoko hung'ang'ania rings za pistons (zinazo scrap oil kwenye cylinder walls) (pia oil rings za modern cars because of emissions standard na ku increase engine efficiency, zinakua low tension) sasa rings zikisha ng'ang'ania basi oil inakua haina kizuizi cha kuifanya isifike kwenye combustion chamber..so inakua burnt together with fuel kwenye combustion chamber.
So my good friend change oil after every 3000km or 3000miles kama watumia synthetic oil.
Kumbuka oil is cheaper kuliko engine.
Don't be deceived by marketing words za hizi brand mbalimbali za oil kwamba hizi oil zaenda km nyingi bila kukuambia under what conditions hizi oil zinaweza tembea umbali wote huo..,kumbuka at times utapokua unahangaika kutengeneza gari lako because of these myth za brands you will be alone, and marketing people will no be there.
Sent from my TECNO KC8 using JamiiForums mobile app