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Coolant change
I would like change the coolant in my 98 Boxster. I know the manual recommends 'only' the Porsche approved coolant. What are some recommendations on other more available, less expensive coolants? I've owned a 928 and 944 and used just regular 50/50 Prestone. Also, is there a special sequence you have to follow in changing the coolant to prevent air pockets or to bleed the system?
All advice is welcome!
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