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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Is this engine coolant?



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      07-02-2013, 10:30 AM   #1
Bowtie_Rider
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Is this engine coolant?

This morning I discovered a small puddle of a blueish green fluid right under my passenger side skirt. Is it engine coolant leaking? Its dripping right under the passenger side skirt adjacent to the jack lift point. I checked the engine coolant level and its fine and the car has not given me any warning light or low coolant fluid yet. I plan on removing the skid pates this weekend if its coolant i hope i can pin point the location its leaking from.

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      07-02-2013, 10:33 AM   #2
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Seems to be. That's the exact color of BMW's dilluted coolant (just like mouth wash ) .
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      07-02-2013, 10:50 AM   #3
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It looks like it.

Could also be washer fluid, if yours happen to be that particular color, but this color tint is very likely to be coolant.
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      07-02-2013, 10:53 AM   #4
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Quote:
Originally Posted by Castle View Post
Seems to be. That's the exact color of BMW's dilluted coolant (just like mouth wash ) .
Quote:
Originally Posted by Meeni View Post
It looks like it.

Could also be washer fluid, if yours happen to be that particular color, but this color tint is very likely to be coolant.
I too believe it will most likely be engine coolant, i guess i just wanted to make sure. Now I only hope its not a major component and maybe a simple hose or something like that, once i remove the skid plate I should be able to pin point where its coming from.
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      07-02-2013, 11:01 AM   #5
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As said, that location and colour could be either washer fluid or coolant. Use smell, evaporation, and checking what fluid you are now low on to narrow it down.
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      07-02-2013, 12:01 PM   #6
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Quote:
Originally Posted by Surly73 View Post
As said, that location and colour could be either washer fluid or coolant. Use smell, evaporation, and checking what fluid you are now low on to narrow it down.
Agree, smell it. Also, coolant is slimy/slippery.
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If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger
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      07-02-2013, 12:06 PM   #7
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looks like gatorade "frost" flavor
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      07-02-2013, 12:10 PM   #8
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If you experience low washer fluid warning alot then that's the washer fluid leaking, I have the same problem. You'll have to replace the little motor, easy to replace but a tedious job to get to.
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      07-02-2013, 12:41 PM   #9
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Washer fluid my guess.
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      07-02-2013, 12:45 PM   #10
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Thats most likely windshield fluid. smell it and you will find out. Coolant has a distinctive odor.

If you smell windshield fluid is smells like Windex kind of.
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      07-02-2013, 02:26 PM   #11
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Based on the location of the puddle it is washer fluid. The washer fluid tank is located in the rear of the right-side front fender There is no coolant lines near that part of the car. Heater hoses are near there, but farther inboard. The coolant reservior is in the font of the wheel as is the rest of the cooling system.
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      07-02-2013, 09:29 PM   #12
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+1, most likely washer fluid in that location.
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