FWIW, I used the Bently method while I was flushing with distilled water. Then ordered a vacuum system for the final fill. Was much easier and had no worries about air bubbles. For the $100 I seriously recommend one. Particularly if you plan to add a third radiator as I do (just need the front hoses and one more frame bracket) or a flush and fill every couple of years.
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1999 Boxster Zenith Blue Metallic/Savanna Beige
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