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Coolant issue

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Old Jun 17, 2022 | 02:03 PM
  #1  
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HEATHN
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From: Houston, TX
Coolant issue

I have a 2015 F250 diesel with 165k. Just recently noticed level was low and I have to keep adding coolant. I do not see any leaks in the coolant system. Anybody know what my next check should be. Note: Its the primary system not the smaller one.
 
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Old Jun 17, 2022 | 03:36 PM
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L_R_G
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How much are you adding and how often are you needing to add it? Do you smell coolant under the hood and/or when it's running? I'm not sure if the 15's have the same turbo coolant line setup as the older models but I know on the older ones that line was prone to leaking and basically impossible to see due to the location.
 
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Old Jun 22, 2022 | 10:35 AM
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HEATHN
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It seems to be about a gallon ever few weeks. I dont smell coolant or see any thing wet and dripping.
 
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Old Jun 22, 2022 | 02:38 PM
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You might have better luck in the 6.7 diesel forum.

Here is the coolant flow diagram for the primary system from the Technician's manual:

 
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