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Originally Posted by blinkwatt
If your topping off your coolant use distilled water. If you flushing it use a mixture of distilled water and DEX COOL coolant.
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Lots of really negative info about dex cool out there but it is probably over-hyped by scurvy lawyers (in a negative way I mean).
I have found some parts stores that show only Porsche factory and Pentosin as the acceptable coolants. Pentosin is pink and appears to be factory fill for vw's and audi's (according to some forums anyway). Does anyone know if this is the same stuff as Porsche? I have a gut feeling that it is the same stuff.
We know that Porsche doesn't make their own coolant and what other brand is pink like Porsche's (excluding the japanese fills). Pentosin is German and appears to be used on VW's/audi (Porsche owns 31% of VAG I think)? Circumstantial evidence makes it look like it it is Pentosin but does anyone know more about it?
Pentosin is $9-10 per gallon vs. $35-$55 for porsche.
An example of the car manufacturer rebranding is the ATF for a volvo AWD. You can buy mobile 3309 ATF for $55 per case or Volvo 3309 (same stuff, different bottle) for twice as much.