Catpiano

Um ..  but if the engine take 5L, put 5L oil into it .. if it takes 10L, put 10L into it .. may be +/- a little bit la....

What is "唔夠15%唔好返去換油" ??

I think with 10L oil ..even 放唔清 .. ( may be 30 or 40ml left inside ... ) probably won't really hurt gau?

Well, I am not mechanic ... ( I wish I am .. ^_^ ) I just follow whatever the car tell me, and I don't drive aggressive anymore, (nor super slow nor in high traffic) so, normal service should be fine.

^_^

字典仔

51# Catpiano

Um ..  but if the engine take 5L, put 5L oil into it .. if it takes 10L, put 10L into it .. may be +/- a little bit la....

if life can be so easy, lots of things can be simpler...that's what a lot of mechanic does actually, and leading to either overfill or underfill...

我記得有一次個friend出左架新車, 我唔知用幾多油咁佢就攞個owner's manual出黎睇, it says "it takes 4.7L depends on how much oil has been drained"之類既野, 咁我個朋友第一個反應係"咁即係點呀?"...其實講真, drain十分鐘同一個鐘真係唔止差30 to 40ml, 因為我係用946ml裝既castrol gtx (方便丫嘛), 所以我知我通常都要比manual入多250ml 至500ml...d friend真係睇住我入到咁多架喎....

你打個電話去Honda扮要做service, 不過突然間mention你Oil Life仲有50%囉, 佢真係會叫你唔駛做住, 我個friend drop低架車佢地可以比番佢咩都冇做過???

點保養架車, 除左你改得勁, 渣得狼, 要保養得密之外, 本身原廠recommend你做service既interval好多時候已經係太遲太耐, 所以係視乎你有幾錫車想佢last幾耐, 多問題定少問題之類囉...換個油有幾貴? 有幾煩? 不過聽你既口氣時間就係金錢, 搵到既梗係換車算啦...都係洗錢ja ma...
Well, I am not mechanic ... ( I wish I am .. ^_^ ) I just follow whatever the car tell me, and I don't drive aggressive anymore, (nor super slow nor in high traffic) so, normal service should be fine.

Catpiano

Dictionary ..

Sounds like some of your friends have not so good experience with auto machanic ....

But I am sure lots of people have good experience too ga ...   I got good/bad experience too la...  ^_^   ( vs resturant here, much better!! )

shutterbug

Good read:
http://www.nordicgroup.us/oil.htm#Follow the Money

if you're skeptical the doc, you can go to it's references and read more

if you don't have time just read Dark Oil Myth and 3000k interval

字典仔

CP: unfortunately i always do mostly referral and i have numerous of stories...只不過有時侯我覺得如果真係覺得人地整得好, 冇doubt, 咁你跟本唔會攞second opinion; 整得唔好, 又或者有doubt, 咁自然會想睇下係唔係比人呃???

sb: thx for the link, see if i can get some time tonite from work to read thru those...then maybe we can open up another topic to discuss...

字典仔

岩岩睇完條link, 都唔知可以講咩, 只不過去得啖笑加一堆問號?

首先,我都認同, d油愈出愈靚, 照道理真係可以保養得架車好d, 不過佢講話d污衊野係由燃燒過程電油同空氣產生出黎既, 合成機油都算係而家比較好既機油, 雖然我都唔認同等於可以遲d換(只不過係同等period保護得好d), 咁點解佢又話3000miles換一次其實都唔係好須要? 換油當然要換油隔不過佢又話而家d油靚左照道理唔係應該冇污衊得咁快? 咁佢又叫人唔好3000Miles換但係又唔好用得咁盡用到有sludge? 之不過唔攞去lab驗又唔知, 但係好似有d車八萬開油蓋或valve cover真係好似一pat屎咁, 咁果d係唔係sludge呢? 但係人地跟足原廠話八千就八千, 次次唔係一百幾十(至於都$80?), 就係三五七百, 點解呢? 唔通入錯油?

咁好似洗車, 洗碗, 洗衫一樣, 換油就係一個最好既洗engine方法...咁如果你洗車/洗碗/洗衫見到d水污衊, 你都會換個d水啦, 咁點解見到d油污衊其實唔驗換, 仲要攞去化驗? 仲有佢話成日行hwy就唔駛換咁密? 你試下直渣三個鐘個engine熱唔熱丫喇? 但係佢又話heat breaks down oil more quickly?

我都唔想話人地講既野係錯, 我只係可以講話唔明, 我都想有位高人可以解釋下 ;)

不過其實點講都好, 但求心安理得, 唔換都得, 死左既時候唔好怪人地; 換得密都仲會死既就認命啦, 好似讀書考試咁, 盡左力唔係死而無憾? LOL

shutterbug

Dictionary, I don't know if you've misread something, but I'll try to see if I can answer you...

首先,我都認同, d油愈出愈靚, 照道理真係可以保養得架車好d, 不過佢講話d污衊野係由燃燒過程電油同空氣產生出黎既, 合成機油都算係而家比較好既機油, 雖然我都唔認同等於可以遲d換(只不過係同等period保護得好d), 咁點解佢又話3000miles換一次其實都唔係好須要?
Oil is getting better, so 3000 miles interval is not needed anymore, make sense wor

換油當然要換油隔不過佢又話而家d油靚左照道理唔係應該冇污衊得咁快? 咁佢又叫人唔好3000Miles換但係又唔好用得咁盡用到有sludge?
It says "The key thing is to change the oil before the oil becomes too saturated with contaminants to hold any more, but color is not an indication of this condition."  It also says "by following the manufacturer's recommended oil change interval, you are changing your oil long before the oil has become saturated."  Then the author goes into describing what's severe schedule vs normal schedule (every manufacture will have these 2 schedules).  If you belong to severe, then of course change oil more often.  So far so good, all makes sense.

咁點解見到d油污衊其實唔驗換, 仲要攞去化驗?
Article says "The way modern detergent motor oil works is that minute particles of soot are suspended in the oil. These minute particles pose no danger to your engine, but they cause the oil to darken."  "The only real way to determine whether oil is truly in need of changing is to have an oil analysis performed."  Oil analysis is optional, that's for people who really want to know.

仲有佢話成日行hwy就唔駛換咁密? 你試下直渣三個鐘個engine熱唔熱丫喇? 但係佢又話heat breaks down oil more quickly?
If you're cruising on hwy, your rpm and engine load is not that high, unless you go Coquilhala or something.  Also at hwy speed, cooling system is much more efficient.  Therefore, engine won't get as hot as driving in rush hour traffic.

If you just want to be 心安理得, then do whatever you like.  The point I want to make is that one may not need to do it so often, of course depending on servere service or not.  Don't waste your money for something you don't need and harm the environment with all that used oil and filters.

Btw Dictionary, are you a licensed tech?  Just curious...

字典仔

Dictionary, I don't know if you've misread something, but I'll try to see if I can answer you...

希望你唔會覺得我煩啦...

首先,我都認同, d油愈出愈靚, 照道理真係可以保養得架車好d, 不過佢講話d污衊野係由燃燒過程電油同空氣產生出黎既, 合成機油都算係而家比較好既機油, 雖然我都唔認同等於可以遲d換(只不過係同等period保護得好d), 咁點解佢又話3000miles換一次其實都唔係好須要?
Oil is getting better, so 3000 miles interval is not needed anymore, make sense wor

唔明, 咁佢都講左d污濁野係點黎, 亦都講埋synthetic都唔代表可以用長d時間, 咁正常油污濁就應該換, 如果好似佢咁講污衊係正常既咁又係邊樹黎d sludge?

換油當然要換油隔不過佢又話而家d油靚左照道理唔係應該冇污衊得咁快? 咁佢又叫人唔好3000Miles換但係又唔好用得咁盡用到有sludge?
It says "The key thing is to change the oil before the oil becomes too saturated with contaminants to hold any more, but color is not an indication of this condition."  It also says "by following the manufacturer's recommended oil change interval, you are changing your oil long before the oil has become saturated."  Then the author goes into describing what's severe schedule vs normal schedule (every manufacture will have these 2 schedules).  If you belong to severe, then of course change oil more often.  So far so good, all makes sense.

咁如果d油應該用到咁盡, 等佢都潤滑唔到個engine, 又clean up唔到d污衊野, 咁但係又唔可以比佢sludge, 好難架喎....

咁點解見到d油污衊其實唔驗換, 仲要攞去化驗?
Article says "The way modern detergent motor oil works is that minute particles of soot are suspended in the oil. These minute particles pose no danger to your engine, but they cause the oil to darken."  "The only real way to determine whether oil is truly in need of changing is to have an oil analysis performed."  Oil analysis is optional, that's for people who really want to know.

我都明d油就好似清潔劑咁, 所以會污衊; 不過根據我自己既實驗, 99年車 (98年9月買), 146k, d油4000換一次 (never add up, just every 4k), 就算係對上一個oil change (144k), 佢既condition都比好多兩/三萬公里既新車好...咁即係好定唔好呢? compare番同期既車真係冇問題同埋爽好多, 自己個心就一直都覺得好d, 眼見自己有個朋友有架同款車, 202k, 又落過場, 又去過美國中部做野, 同樣都係4000km換一次, 亦都係渣落好静好爽, 真係有d新車都冇得比喎....

仲有佢話成日行hwy就唔駛換咁密? 你試下直渣三個鐘個engine熱唔熱丫喇? 但係佢又話heat breaks down oil more quickly?
If you're cruising on hwy, your rpm and engine load is not that high, unless you go Coquilhala or something.  Also at hwy speed, cooling system is much more efficient.  Therefore, engine won't get as hot as driving in rush hour traffic.

係, 塞車咁冇冷空氣打入去咁個cooling system就梗係會用得勁d (夏天開埋冷氣可以overheat tim), 不過唔代表你cruise hwy就唔熱, 架車愈行愈"Lup", 停一停, 歇一歇再行, 又爽番...

If you just want to be 心安理得, then do whatever you like.  The point I want to make is that one may not need to do it so often, of course depending on servere service or not.  Don't waste your money for something you don't need and harm the environment with all that used oil and filters.

咁但係你又冇講點叫密, 點叫唔密? 有d人覺得六千換油太密, 有d人又覺得六千太耐, 你既建議係?

Btw Dictionary, are you a licensed tech?  Just curious...

我? 都係上下forum, search下google惡補下, 得閒上黎吹下水叫做幫得就幫, 幫唔到既又唔關我事咁囉

個牌? 考完都未見過, 可能過左期lu (不過又好似冇expiry date, 剩係記得有個issue date...)

咁題外話又問下, 洗車水, 洗衣液之類既野就道理污濁左其實都應該繼續洗, 至少環保丫嘛...換油呢家野其實有咪得囉, 其實以為應該剩係sell "top up fluids"...又快, 又方便, 記得以前有個朋友十七萬都係換十五次油, 架車都仲行得呀, 不過要換engine之嘛, 另一個最近期既又係, 死左一個cylinder唔緊要, 仲有三個...

shutterbug

唔明, 咁佢都講左d污濁野係點黎, 亦都講埋synthetic都唔代表可以用長d時間, 咁正常油污濁就應該換, 如果好似佢咁講污衊係正常既咁又係邊樹黎d sludge?
When the oil becomes *saturated with contaminant* particles new particles settle out of the oil onto the internal engine parts and form sludge.  The point is that when you follow manufacturer's service schedule (severe or normal), the *saturated with contaminant* point will not happen before you do a service.  People could be driving in severe condition but using normal service schedule, which is a common problem.

不過根據我自己既實驗, 99年車 (98年9月買), 146k, d油4000換一次 (never add up, just every 4k), 就算係對上一個oil change (144k), 佢既condition都比好多兩/三萬公里既新車好...咁即係好定唔好呢? compare番同期既車真係冇問題同埋爽好多, 自己個心就一直都覺得好d, 眼見自己有個朋友有架同款車, 202k, 又落過場, 又去過美國中部做野, 同樣都係4000km換一次, 亦都係渣落好静好爽, 真係有d新車都冇得比喎....
I can only say different year, different driver, etc hard to compare.  However, I don't agree with a car that has 144k is in better condition than a car with 30k, unless the driver of the 30k car trashes his car with no maint or whatever.  Following manufacturer's schedule is enough to keep the car in good shape.

係, 塞車咁冇冷空氣打入去咁個cooling system就梗係會用得勁d (夏天開埋冷氣可以overheat tim), 不過唔代表你cruise hwy就唔熱, 架車愈行愈"Lup", 停一停, 歇一歇再行, 又爽番...
Of course engine will get hot, but how hot is the question.  Your engine is way hotter when you're stuck in traffic than cruising on hwy.   That's why if you drive in heavy traffic, you should follow the severe service schedule lor.

咁但係你又冇講點叫密, 點叫唔密? 有d人覺得六千換油太密, 有d人又覺得六千太耐, 你既建議係?
I recommend following the manufacturer's schedule.  Make sure you know if you're severe service or normal service.  That's the key.  If you're a taxi driver and you follow the normal schedule no doubt you will trash your engine.  If you ask me how long, I will say what is your driving condition first.

字典仔

When the oil becomes *saturated with contaminant* particles new particles settle out of the oil onto the internal engine parts and form sludge.  The point is that when you follow manufacturer's service schedule (severe or normal), the *saturated with contaminant* point will not happen before you do a service.  People could be driving in severe condition but using normal service schedule, which is a common problem.

咁你覺得有幾多人其實會屬於severe condition有夕幾人又屬於normal呢? 有好多人半年連五千都行唔到, 咁算點呢? 仲有, 原廠都有sell engine flush, 三萬零左右, 咁如果換油換得夠密又點解咁早要flush? 近黎佢地又話flush唔好, 咁之前比佢地flush左果d點算?

[/quote]
不過根據我自己既實驗, 99年車 (98年9月買), 146k, d油4000換一次 (never add up, just every 4k), 就算係對上一個oil change (144k), 佢既condition都比好多兩/三萬公里既新車好...咁即係好定唔好呢? compare番同期既車真係冇問題同埋爽好多, 自己個心就一直都覺得好d, 眼見自己有個朋友有架同款車, 202k, 又落過場, 又去過美國中部做野, 同樣都係4000km換一次, 亦都係渣落好静好爽, 真係有d新車都冇得比喎....
I can only say different year, different driver, etc hard to compare.  However, I don't agree with a car that has 144k is in better condition than a car with 30k, unless the driver of the 30k car trashes his car with no maint or whatever.  Following manufacturer's schedule is enough to keep the car in good shape.[/quote]

seriously, 無論架車放出黎既油, 就連拆出黎既油隔(漏乾之後)重量都唔同, 咁當然三萬零公里既車某一個程度上黎講你新"少少"囉, 不過真係睇到都覺得可憐架; 咁當然, 如果冇要求既, 求其換左油, 入滿gas架車咪行得囉...不過幾年後架車已經比起同期既差...

曾經, 有一個朋友渣架02 Civic Si, 棍波, 一路都返廠做保養 (ave 7800km, very on time according to honda, warm up about 2 mins before drive, 94 when new then 87 when it gets older and older), 到差唔多八萬公里佢話保養期過左話唔想攞番廠, 睇完之後同佢整左一大堆基本保養都冇做好既野, 但係佢d單就話做左乜做左物, 整完佢覺得好好, 我覺得都仲係差d, 唔夠爽; 剛巧有個朋友渣同年civic, 八萬五 (多幾千公里, 我會話大同小異啦), 都係棍仔, 五千一次Motul Synthetic, 有用autostart warm車, 入89/92, 期間有一兩次咁岩我返左香港佢攞去原廠換油, 佢話換完冇咁爽喎 (不過烈市honda都係有賣motul, 入左d咩我就唔知啦), 佢地交換車渣左一個圈, 之後一個黑面一個好開心; 開心果個梗係覺得保養得好值得, 而家仲渣緊! 唔開心果個三個月後換左車lu, 因為compression reading都有d分別啦, 一架d嘩佬明顯響d要較咁囉 (其實我都真係好唔好意思, 攪到佢心裡面有條刺, 不過都好既, 佢真係好鍚車, 只不過係之前唔識)

係, 塞車咁冇冷空氣打入去咁個cooling system就梗係會用得勁d (夏天開埋冷氣可以overheat tim), 不過唔代表你cruise hwy就唔熱, 架車愈行愈"Lup", 停一停, 歇一歇再行, 又爽番...
Of course engine will get hot, but how hot is the question.  Your engine is way hotter when you're stuck in traffic than cruising on hwy.   That's why if you drive in heavy traffic, you should follow the severe service schedule lor.

應該咁講, 唔同既熱啦, 塞車塞得耐, engine熱架車會lup, 一行番順又會好d; 行長程既其實個engine都好熱, 所以其實一樣咁重要...

不過我覺得如果一架車成日行短程(每日都係行十零廿公里之內), 同一架車成日行"中程"(每日行四十零五十公里), 咁中程既會好d; 但係有朋友日日行80至120km左右既都有, 我唔見得果d好囉; 好多時候驗二手車其實已經可以睇到好多野, 不過當然, 買得起新車而又換得起身既, 保養好似算唔算唔重要?

咁但係你又冇講點叫密, 點叫唔密? 有d人覺得六千換油太密, 有d人又覺得六千太耐, 你既建議係?
I recommend following the manufacturer's schedule.  Make sure you know if you're severe service or normal service.  That's the key.  If you're a taxi driver and you follow the normal schedule no doubt you will trash your engine.  If you ask me how long, I will say what is your driving condition first.

umm...咁我諗你既車都係跟廠建議去做? 行左幾多呀? 不如我搵架同年同款既攞黎做個compression check, 比較下post上黎再討論下丫; 你帶埋油同油隔黎大家fresh oil比較下亦得...當係送比其他老友記既禮物? (唔緊要, 你可以自己落手落腳做, 或者做完先即刻黎都得)

我都係想比較下ja...好似琴日一個朋友架車咁, 二手番黎試過engine flush, 換多幾次油之後又回復原狀, 咁我上次就叫佢換完油行左1500km左右番黎試下放出黎咩樣(佢行左1415km), 睇落似四千零公里囉; 入左落去既新油明顯比上次入落去既好左, 今次二千再番過黎...

換完之後同佢出去食飯走hwy落烈治文, 架車順左好多...咁又點解呢? 冇理油呢d天氣行左千零公里就有分別架喎? 咁唔理佢照舊五千換, 佢又好似一次差過一次, 咁點算呢???

人生真係太多問號喇, 好彩有shutterbug...下次我可以copy and paste話番比人知 (不過我亦都知當中其實佢地已經係度CD Rom緊, oooops)....