I read in the forums and watched Youtube videos about flushing the Porsche system and using the bleeder control bail from within the engine compartment to burp the air out of the lines. I should have added distilled water (it’s Florida people), but no, I sprung to have a proper 50-50 mix, buying 1-Liter of Porsche branded Organic Acid Technology (OAT) coolant from Suncoast parts. I’ve never had any fluids leaking on the garage floor (I do look periodically), so I figured I just needed to top off the reservoir. The warning cleared itself within about 2 minutes of driving, but did come on again in the two successive days after, which were also cool days.
On a recent cold day (does that really exist?), I also got the “Low Coolant” warning light on a cold start for the first time in the two years I’ve had my 981 Cayman S.
