R50/R53 :: Hatch Talk (2002-2006) Cooper (R50) and Cooper S (R53) hatchback discussion.

R50/53 while coolant tank replaced

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Old Mar 15, 2018 | 07:58 PM
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while coolant tank replaced

today, i replaced coolant tank because of leaks. while i was replacing the tank, i noticed that the previous coolant was little thicker than water and color was kinda brown. I've seen this symptom before and i heard that it could be mixing with the oil and it could be head gasket leaks. I've check the oil cap if there is residue on cap but everything looked normal and i even checked the oil dipstick and it was normal as well. I don't know what else i need to check and what am i supposed to do with this.. Coolant flush? Please advise.
 
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Old Mar 16, 2018 | 12:36 AM
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Have you notice if there was more of an oil loss than normal ?
If the oil cap and dipstick is showing ok, I'd see if there was anything showing in the radiator by trying to drain a little coolant from the bottom.
 
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Old Mar 16, 2018 | 04:37 AM
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If it walks like a duck, quacks like a duck . . . . .

Chocolate milk is not found in a car unless the coolant has mixed with the oil. Get a business car, put a drop or two of your milk on the card. Let lay flat for a couple of hours. If there oil in the mix, the oil will move/migrate outward from the center leaving the remaining materials in the middle. A single color stain, most likely no oil, two color stain with a darker center, chance are oil.
 
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Old Mar 16, 2018 | 05:35 AM
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My guess is to check the heat exchanger, they can leak oil into the coolant.

https://www.northamericanmotoring.co...il-cooler.html


 
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Old Mar 16, 2018 | 06:33 AM
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2X ECSTuning
 
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Old Mar 16, 2018 | 08:29 AM
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From: Socal
Originally Posted by AnOldBiker
Have you notice if there was more of an oil loss than normal ?
If the oil cap and dipstick is showing ok, I'd see if there was anything showing in the radiator by trying to drain a little coolant from the bottom.
I guess i might have to check oil level when i get home today.
 
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Old Mar 16, 2018 | 08:30 AM
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From: Socal
Originally Posted by ECSTuning
My guess is to check the heat exchanger, they can leak oil into the coolant.

https://www.northamericanmotoring.co...il-cooler.html


is it hard to install?
 
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Old Mar 16, 2018 | 08:30 AM
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From: Socal
Originally Posted by ItsmeWayne
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would it be hard to install DIY?
 
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Old Mar 16, 2018 | 09:10 AM
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A little bit of work but you can access from the one side.

https://www.northamericanmotoring.co...n-coolant.html

https://www.northamericanmotoring.co...in-an-r53.html
 
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Old Mar 16, 2018 | 09:23 AM
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Originally Posted by yyj3869
would it be hard to install DIY?
Except that it is in a bit of a difficult place, you can DIY.
Make sure to read this post:
https://www.northamericanmotoring.co...n-coolant.html
 
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