$1000 Coolant Change

   / $1000 Coolant Change #31  

lilranch2001

Super Member
Joined
Nov 25, 2009
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7,132
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Bobcat CT 235
Several things can cause a precipitate in coolant. Material from the head gasket usually causes a grey thick material that settles to the bottom. The coolant can pickup material left over from the casting process, which often includes rust, and that can precipitate out. Silicates can also precipitate out, but that would normally be a small amount. Is it possible you ran with too high a concentration of antifreeze? That can also cause precipitates to form.
There are labs you can send this stuff to and have it analyzed, here's one that does oil, not sure if they analyze coolant.
Bummer man, you have my condolences.

My understanding is Blackstone Labs in Fort Wayne is one of the very best in the nation
 
   / $1000 Coolant Change #33  

tcartwri

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Mar 28, 2010
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Ontario
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CT235
The problem is from mixing coolants. I'm reluctant to tell you that your motor is probably ruined. There is a TSB from Chrysler on this very subject and it is a result of mixing OAT coolant with a non compatible formula. I'll see if I can find the TSB.
 
   / $1000 Coolant Change #35  

tcartwri

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Should probably make this a sticky.
 
   / $1000 Coolant Change #37  

tcartwri

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Mar 28, 2010
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Do you have the containers it came in?
 
   / $1000 Coolant Change #40  

tcartwri

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Mar 28, 2010
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Do your rad deposits look like the pictures in the thread I posted.
 
 
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