BMW 水箱水該怎麼選擇?
 

先說結論，個人認為除了無須再稀釋，可直接使用的水箱精外(買到這種你無從選擇用水)，其餘無論任何品牌的水箱精，都應該以純水或RO水稀釋後，再倒入冷卻水箱，絕對避免使用自來水。



不建議使用自來水原因，無須涉及高深理論，從你家裡的熱水瓶來觀察就好。使用自來水的熱水瓶，你被迫得多久清洗一次內膽?洗的時候積垢有多厚? 我不知道其他地方，我家中的水，來自號稱水質評鑑優良的翡翠水庫，大樓買時是全新交屋，管線當然是全新無水垢的狀態，但熱水瓶我媽很難忍受超過一個月沒洗。若是撐到三四個月以上，積垢已深的話，還得先用檸檬酸來浸泡，泡軟了水垢才有辦法洗乾淨，這就是我們的自來水水質。

食用水不過濾，是用自己的腸胃道與腎臟來吸收這些礦物雜質，這樣的水我從小喝了三十年吧，直到自己獨立買房子，裝了RO逆滲透過濾器後，自此不必再洗熱水瓶，即使要洗，也是春夏要收起來時，洗一下求心安，平時每月檢查內膽，都是乾淨溜溜，膽壁一點鈣化雜質都沒有，差異就在這裡。



水箱的散熱管壁與冷卻水間，若是隔著厚重的鈣化水垢，引擎的熱要從何處散逸?即使風扇轉得再快，散熱效果一定仍如隔靴搔癢，水管裡的冷卻水永遠過熱，如此環境很難要求散熱效果會好吧? 如果管壁金屬沒有水垢，直接接觸冷卻水，不言可喻，效果一定非常直接，引擎室內就不容易發生散熱不良。



另外，日積月累的水垢，也會導致可用管徑變窄的問題，隨著使用時間越長，管垢也越積越厚，水流則越來越小。跟膽固醇過高一樣，冷卻系統長時間效能不彰，便容易引發引擎系統過熱的諸多後遺症，講完了，收工。

:D

全文如下:
http://blog.xuite.net/artist1128/blog/166404833

GOOD~感謝分享

推一下
我連雨刷水都盡量用有過濾的水來補充.....

水要使用軟水或蒸餾水,使用自來水的話,硬度不可超過3.5 mmol/l

BMW原廠水箱精是德國BASF巴斯夫代工的

BMW原廠水箱精認證編號為-----> BMW N 600 69.0

可用德國BASF巴斯夫代工的 Glysantin® G48 就連 Mobil 美孚的水箱精也是
國外BMW bimmer論壇的討論
BASF is the OEM manufacturer of G-48 coolant for BMW.Even the Mobil coolant contains BASF
http://forums.bimmerforums.com/forum...roved-Coolants

全球汽車廠商的水箱精認證編號
http://www.glysantin.de/files/basf_g...iew_a4_e_1.pdf

BMW TIS
Approved anti-freezing and anti-corrosive agents
With the protection of the environment in mind, BMW has been filling all of its vehicles with nitrite- and amino-free
anti-freezing and anti-corrosive agents since mid-1986 as standard practice.
The use of anti-freezing and anti-corrosive agents that contain nitrites and amines is no longer permissible.
Trade name BMW part number Container size
BMW Antifreeze 81 22 9 407 454 1.5-litre can
BMW Antifreeze 81 22 9 407 455 60-litre barrel
BMW Antifreeze 81 22 9 407 456 205-litre barrel
BMW Antifreeze 81 22 9 407 755 Tanker (truck)
Trade name Manufacturer/Supplier
BMW原廠認證的水箱精品牌名稱及生產公司
Addinol Antifreeze Super生產公司 Addinol Lube Oil GmbH
Aral Antifreeze Extra生產公司 Aral AG
AVIA Antifreeze APN 生產公司AVIA Mineralöl AG
BMW Antifreeze 生產公司BMW AG
BP anti-frost X 2270A生產公司 BP Schmierstoff GmbH, Hamburg
Caltex CX Engine Coolant生產公司 Caltex
Castrol ANIT-FREEZE NF生產公司 Castrol International
Fridex G48 生產公司Velvena s.a.
Glacelf Plus生產公司 Total
GlycoShell 生產公司Shell International
Glyco Star 生產公司Bremin Mineralöl GmbH & Co.
Glysantin G48-24 Engine Coolant 生產公司UNICO Ltd.
Glysantin Protect Plus / G48 生產公司BASF
GUSOFROST LV 505 Chemische Industrielle Gesellschaft
Mobil Frostschutz 600 生產公司Mobil Schmierstoff GmbH
Havoline AFC (BD04) 生產公司ChevronTexaco/Arteco
Mobil Frostschutz 600生產公司 ExxonMobil
OMV Kühlerfrostschutz 生產公司OMV AG
Total Thermofreeze Plus 生產公司Total


1.0 Requirements concerning engine coolant
Pure water is unsuitable as a coolant not just because of the lack of protection against freezing-up. Good functioning of the cooling system is only guaranteed once a suitable anti-freezing and anti-corrosive agent, or antifreeze for short, has been added.
The cooling system of BMW vehicles must only be filled with the anti-freezing and anti-corrosive agents approved for this purpose. The filling and maintenance instructions to be found in the Repair Instructions and operating
instructions must be observed. Antifreeze agents must meet the following requirements:
- They must guarantee operability of the cooling system in winter (anti-freezing protection by lowering the freezing point) and in summer (prevent boiling and boiling over of the coolant).
- They must protect metal components that come into contact with the coolant (grey cast iron, steel, aluminium alloy, brass, copper and solder) against corrosion and cavitation.
- They must be neutral with respect to rubber and plastic parts in the coolant circuit.
- They must guarantee the consistency of the above-mentioned quality criteria.
To create these coolant properties, the anti-freezing and anti-corrosive agents must be mixed to the correct ratio with water.
Prescribed mixture for coolant:
- 50 % antifreeze for anti-freezing protection down to -38 °C
The original coolant mixture poured into the cooling system at the factory has this antifreeze-to-water ratio.
If the proportion of antifreeze is less than 40 % (i.e. the water content is higher than 60 %), not only the degree of protection against freezing, but also protection against corrosion is reduced. When the water content is too high, this can lead to premature overheating in very hot weather or hot climates and as a consequence lead to coolant being ejected out of the system and damage to the engine through overheating. This means that it is essential that an anti-freezing and anti-corrosive agent is added even in the tropics. Too high a concentration, more than 55 %, leads to deterioration of the cooling properties (heat transfer) and protection against freezing-up is modified in the opposite direction, i.e. it also deteriorates. The amounts of antifreeze required for providing protection against freezing-up are stated as percentage figures on the containers. However, it is not only necessary to comply with the mixture ratio specified; the minimum requirements for the quality of the water must also be adhered to:
• Appearance: colourless, clear
• Sediment, without suspended matter
• pH value: 6.5-8.0
• Total hardness, max.: 20° dH (German hardness grade) or in new measuring unit:
• Total hardness, max.: 3.6 mmol Ca 2+/ ltr.
• Chloride content: max. 100 mg/ltr.
• Sulphate content: max. 100 mg/ltr.
Potable tap water usually fulfils these requirements. Local water utilities can provide information about the quality of the water they supply. If necessary, the water must be treated (e.g. softened) or distilled water must be used.
The quality of regenerated sea water (as found in the Gulf states) is inadequate! SBS

4.0 Coolant additives
BMW does not approve the use of coolant additives that e.g. provide additional protection against corrosion or are aimed at sealing hairline cracks.
Due to the poorer transfer of heat from the cylinder head to the coolant, this can lead to heat accumulation and hot spots , which in turn can lead to cylinder head gaskets burning through and cracking of the cylinder head .
We cannot provide warranty for any consequences and effects the use of such additives may have.

2.0 Change interval, changing and testing coolant, disposal, cleaning the cooling system Change interval, changing and testing coolant
Regular checks of the coolant composition as part of Inspection I and II. As the anti-corrosion characteristics of the coolant decrease with time, the change interval of 4 years (3 years for M-Power vehicles) must be observed. The antifreeze concentration in the coolant must be checked each year before the cold season begins. The composition of the coolant must also be checked after the coolant level has been topped up. An areometer or densimeter (antifreeze tester) is required for setting and checking the concentration. It is permissible to mix various brands of the approved agents.
Ongoing technical development means that the coolant does not need to be changed on the vehicles listed below.
- E65 from 09/2003
- E60, all models since market introduction
- E85 since market introduction
- Vehicles with Service interval indicator (SIA) with petrol engines from 03/2003
- Vehicles with Service interval indicator (SIA) with diesel engines from 09/2003
- M vehicles from 09/2003
Disposal
The instructions laid down in the safety data sheets published by the manufacturers of anti-freezing and anticorrosive agents and the statutory regulations of the individual countries must be complied with.
Cleaning the cooling system
If the cooling system is soiled, e.g. by oil residue etc., it may be necessary to clean the system with a suitable cleaner. SBS

感謝分享，受教了 :)

水垢不會日積月累,只會在沸騰時產生一次,
除非你每年都換水箱精,而且都加自來水,又不清洗水箱,才會越積越厚

現在長效型水箱精可耐5年or 20萬公里
只要水箱不失水,濃度不低於33%,
散熱系統不異常,基本上可以不用更換
所以原廠才建議水箱精可以不用換(道理跟變速箱油差不多)

不過對DIYer來說,每年都一定會換各煞車油,水箱精等,因為不換手會癢...

不過一般的水箱精還是會註明 一年or 2萬公里換一次

感謝分享喔!!!又上了一課了 ^ ^

讚~非常詳細的講解

謝大大，分享

完全認同
到處都有RO水加水站
要換水箱精之前拿個大水桶去接水
然後帶去保養廠換，很方便的

所以Zero大您的意思是如果常換自來水加水箱精的話, 反而容易造成水垢阻塞就對了!

感謝分享

硬水(ex.自來水)加熱後會產生水垢附著在管路內
每換一次硬水,水垢就會多一層
彷間保養場都喜歡直接接自來水管幫你大循環洗水道,然後加瓶水箱精 完工
水箱水看似乾淨了,但水箱內部鰭管上水垢只會越來越塞,最後就是賺你水箱錢了~ 嘿

所以原廠(配長效型水箱精)建議只要散熱系統沒異狀,水箱精可以不用每年換
而且要是技術不好,空氣沒放乾淨,反而衝水溫~ 哈哈哈

而且散熱系統有問題,常見原因也是水幫浦沒轉or水龜沒開,或風扇不轉
至於說什麼因為不換水箱精,造成水垢堵塞水龜的話
先想想為什麼你的水道內會有水垢產生

忘了說重點
換水箱精只要你是用RO水
你很閒每各月換一次都沒關係

大家可以參考這篇http://www.bmwcct.com.tw/forums/thread90756.html
換水箱水把持兩個原則：1使用純水，2比例正確。如果以一手全新車來說可以不換，如果二手車你不知道前車主用什麼水，最好還把水箱水換掉。

的確~~有時就是手賤 不找東西搞一下手會很癢:mad::mad:

水要使用軟水或蒸餾水 +1

感謝分享喔 :)

真有這樣講究喔~那保養廠是不是也知道阿~為何沒看過保養廠裡面有裝RO水的...真納悶!

這樣成本高、麻煩、取得不方便。

還是有保養廠用RO水、氮氣用來冷氣探漏。
上網查就知道了。

GOOD~感謝分享

感謝分享...長知識!!

剛換了水箱水,用了三罐站上買的賓士水箱精,也是因為不知上個車主換過沒有?換了求安心.

我想換那個無水的水箱精 , 請問有人用過嗎?? , 說不會鏽蝕真的很吸引我.....
(快二十年的老e36)

水箱精要慎選，外廠很多是顏料水。

嚇人喔, 真的有這麼多黑心廠商嗎?這裡是寶島台灣嗎?＿

很多雜牌和特價水都是色素水,千萬小心,大買場,汽車佰貨,自來水加色素,暴利成本不到10元

多爬文、多增長知識、太棒哩、感謝無私的分享

又上了一課囉感謝大大分享:)

:) 我用福士水箱精, :p:D
在里程44萬KM更換, 兩罐加到滿~^.^ :):D
水箱和水Pump也乾脆一併換掉! :p:D

Kevin in 新竹市/歐規525iSE, 里程 442,205KM