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E46 General discussion and technical help for 1999-2004 3 series cars.

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Old 11-16-2007, 12:59 PM   #1
f1indycar
 
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Name: f1indycar
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Engine coolant

I need to add engine coolant, my dash light stays on for about 1 -2 minutes after it is started. I looked in the owners manual, and it said to contact dealer for proper fluid. Does anyone know what I can buy at a local auto store? I have a 2001 330i auto w/steptronic.
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Old 11-16-2007, 01:36 PM   #2
iamcreepingdeath
 
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Most likely any old fluid will work. coolant is coolant. I have heard, however, that mixing different types of coolant is bad. I don't know why, but that is what i have heard.

btw, i use mostly water in my '95 325, and a little green coolant to keep it from freezing, and no problem so far...
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Old 11-16-2007, 02:08 PM   #3
mzbmw325i
 
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i would stay away from experimenting, go to the bmw dealer and get the blue stuff, 20 bux, then mix half and half with distilled water in a sperate container (1/2 coolant and 1/2 distilled water).

if you only need to add a bit to your exapnsion tank, just add distilled water.
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Old 11-16-2007, 02:58 PM   #4
Dudesky

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If you're not going to use BMW coolant, read the label of the brand you're buying. It should be nitrate, amine and phosphate free. And never use that long-life stuff (Dex-Cool). Very bad for your Bimmer's water pump and other parts. I use Zerex G-05, which is very close to BMW's stuff.
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Old 12-03-2007, 10:51 PM   #5
TECH

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If there are no leaks, then it's just the water evaporating, so just add some distilled water. Antifreeze isn't disappearing, it's the water.
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