Coolent

Tiny
AMBER16
  • MEMBER
  • 2010 MINI COOPER
  • 50,000 MILES
I put antifreeze in my car coolent. As I poured it in I then realised the antifreeze is moldy. Just want to know if the car coolent will be ok with mold in it? :/
Friday, August 26th, 2016 AT 10:34 AM

5 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,752 POSTS
I've never seen moldy antifreeze. What does it look like? I suspect you're seeing one of the many additives that settled out or isn't mixed well.
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Friday, August 26th, 2016 AT 10:40 AM
Tiny
AMBER16
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Its got spots like mold in it and is stringy in the liquid
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Friday, August 26th, 2016 AT 10:44 AM
Tiny
CARADIODOC
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  • 33,752 POSTS
I think you're seeing additives that will mix in the engine. Those are things like water pump lubricant, corrosion inhibitors, and anti-foaming agents. Mold DOES grow in ethanol, which is alcohol. Antifreeze is alcohol too, but mold needs air to grow. If your antifreeze was in a sealed container, I doubt it's mold. Regardless, it's not going to hurt the cooling system.
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+1
Friday, August 26th, 2016 AT 10:52 AM
Tiny
AMBER16
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Ahh ok thanks so much for your help :)
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Friday, August 26th, 2016 AT 11:06 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Maybe a little bit of oil floating from contamination?
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Friday, August 26th, 2016 AT 1:01 PM

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