Warning about using water as coolant - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 08-05-2004, 02:44 PM
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I have read a lot of posts in the last week or so regarding coolant leaks. For those of you that dont remember I was the guy that replaced ALL of the hoses (there 8 of them IIRC) The first thing to check when you are faced with a coolant problem and you dont see any visible leaks is the OIL CAP. If there is a whitish/ milky looking goo on the inside of the cap, this is a very strong indicator that you have blown a head gasket. Having said that, more often than not it is something much less disasterous than this. But I must warn you guys, do not use tap water when filling your Cooling system. In a matter of weeks you could wreck your engine block. Here is what happens: if you use tap water it has lots of minerals and imputities in it. These inpurites conduct electricity. You have a very powerful battery in your car, which is powerful enough in fact to actually perform the same function as electroplating only it will transfer the aluminum from your block and heads to other metal parts. Run down toyour grocery store and use distilled water. it is cheap as hell and will not cause problems.
In fact I have read a lot regarding the problems people had by not using BMW coolant, and my research indicates if you change your coolant every tweo years, and use distilled water you dont have to worry about the silicatre precipitation leading to the evil green goo in your cooling system.
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#2 (permalink) Old 08-05-2004, 02:48 PM
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In the classic Swayze movie "Red Dawn" (where the Russians invade and the high school students fight them off) the boys pee in the radiator when it overheats. I suppose that's pretty bad for the engine too.

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#3 (permalink) Old 08-05-2004, 03:00 PM
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Look guys when your stuck your stuck... better to pee in your radiator then warp your head or block, just flush ASAP... or disconect your battery if you cant get to it for more than a day or so...
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#4 (permalink) Old 08-05-2004, 03:26 PM
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Thanks for the valuable info guys!!! I have mixed 30C/70W(tap water) will that be any problem?
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#5 (permalink) Old 08-05-2004, 03:33 PM
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damn are you stupid? go back and read the post i put up a half hour ago... how can you say thanks for the valuable info and then either not read it or ignore and ask a question that has just been answered.. tell ya what. pee in your radiator it works better than coolant and it is already pre mixed...
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#6 (permalink) Old 08-05-2004, 04:06 PM
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Wow... Easy there red. Stick with a 50/50 of the blue coolant and distilled water.

I pmmed you back with some info, let me know if you try it...

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#7 (permalink) Old 08-05-2004, 04:12 PM
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dont get the drinking water from the store. get the stuff that says for photography, irons, cleaning, etc...

prior to replaceing my whole cooling system radiator, belts, water pump, thermostat, thermostat housing. (just 2 hoses). i was using tap water with no problem.

tap isn't good to be using all the time for long periods it more like to cause other problems. I've never heard of the electro plating issue but under the right circumstances your gonna have a problem.

and the purified water is like 59c a gallon or something.

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#8 (permalink) Old 08-05-2004, 04:18 PM
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this is a great article on coolant and changing the coolant... also explains electrolysis...

http://www.pelicanparts.com/bmw/techarticl...olant-Flush.htm
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