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Old Mar 20, 2013 | 07:36 PM
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Coolant pH

What is the correct glycol and pH for the coolant? My coolant is 25% and 8.0. I feel like the glycol is low. Should I drain some off and add concentrate?
 
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Old Mar 20, 2013 | 08:08 PM
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8.6--9.2 as per Schaeffers coalant treatment instructions.
 
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Old Mar 21, 2013 | 04:00 PM
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Originally Posted by A/Ox4
What is the correct glycol and pH for the coolant? My coolant is 25% and 8.0. I feel like the glycol is low. Should I drain some off and add concentrate?
Conventional "green" coolant? OAT ELC?

pH is a good indicator of the condition of your ELC. Right out of the bottle the pH of ELC will be considerably lower than conventional (green) coolants. Say a pH of 8.3 for ELC and 10.5 for conventional.

A key point here is that you really have to know the original/baseline pH of the type of coolant you have when it is new (and diluted with H2O) to compare a later test of pH with. You can test the pH (after you mix with H2O) and write it down somewhere when you switch out to the ELC.
Info from Gooch.

Stewart
 
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Old Mar 21, 2013 | 04:33 PM
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Its Motorcraft Gold coolant.
 
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Old Apr 3, 2013 | 07:14 PM
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I tested the coolant and it is 45-50% and 7.0pH
 
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