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3 Series / 4 Series
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  #1  
Old 07-14-2003, 08:16 PM
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ed325i ed325i is offline
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Location: Ontario; too hot in summer, too cold in winter
 
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Coolant light came on - top up with water or coolant?

Hello,

The coolant light comes on for about 30 seconds after I start the car in the morning, then it turns itself off. I called my dealer, and the service adviser told me to top up the coolant tank with some water, once the engine cools. My question is, should I top it up with water, or with coolant? Thanks.

Ed
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  #2  
Old 07-14-2003, 08:28 PM
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JST JST is offline
A sudden sense of liberty
Location: U of ///M
 
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Quote:
Originally Posted by Ed328Ci
Hello,

The coolant light comes on for about 30 seconds after I start the car in the morning, then it turns itself off. I called my dealer, and the service adviser told me to top up the coolant tank with some water, once the engine cools. My question is, should I top it up with water, or with coolant? Thanks.

Ed
The recommended fill is 50/50. I sacrificed a couple of old water bottles to use for pre-mixing the water/coolant. I wouldn't use just water, given that you're in a cold climate.

FWIW, BMW also recommends using their own coolant. I bought a jug of it and it has lasted me through three BMWs so far, so it's not a bad value.
  #3  
Old 07-14-2003, 10:11 PM
Masskrug Masskrug is offline
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What JST said.

Make sure you use distilled water, as you don't want minerals corroding your cooling system.

The BWM stuff is pretty inexpensive at 13 bucks and change for the gallon; show your CCA card for the added discount.
  #4  
Old 07-14-2003, 11:12 PM
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The Roadstergal The Roadstergal is offline
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Quote:
Originally Posted by JST
FWIW, BMW also recommends using their own coolant.
I have been told that using cheap coolant is the cause of this type of pitting:
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  #5  
Old 07-14-2003, 11:56 PM
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ed325i ed325i is offline
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Mein Auto: 328Xi
Thanks. I'll stop by the dealership tomorrow morning and pick up some coolant.

Ed
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  #6  
Old 07-15-2003, 09:15 AM
RKT BMR's Avatar
RKT BMR RKT BMR is offline
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Quote:
Originally Posted by The Roadstergal
I have been told that using cheap coolant is the cause of this type of pitting:

Where's the pearl bracelet?

Hey! That doesn't look like your wrist/hand either! You're denying us, Rgal!

  #7  
Old 07-15-2003, 09:33 AM
VelvetFoot VelvetFoot is offline
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This happened to me. There was no coolant on the stick! Turned out coolant was weeping out the coolant pump, and I got a new one and the not-inexpensive coolant under warranty.

I don't think you should have to add coolant, as a rule.
 

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