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Old 08-13-2025, 03:03 PM   #1
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Quote:
Originally Posted by Hello.AmeerM View Post
No idea-- when I changed it, I didnt flush the peak coolant, just drained and refilled; all the seals, caps, and clamps are the same.

The peak has Potassium 2-ethylhexanoate and Sodium 2-ethylhexanoate, in addition to the glycols. The prestone only lists glycols and bitterant.
None of which would alter the thermal transfer properties of the coolant mix. Something else was wrong, like a stuck thermostat or a trapped air pocket. It was not the coolant............
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