Volvo Repair: Volvo s70 coolant, volvo s70, coolant

Question
Just wanted to know: Which coolant can I buy to top-off my coolant when it starts to run low without having to see the mechanic ?  I have a 1998 S70, non-turbo.  Thanks!!

Answer
Susan, As long as its not Dex-cool, you can use Prestone or whatever other brand.  Im assuming services were done somewhere other than a dealer?  Coolant is pretty much the same because its only made at 2 factories.  The differences is in the color.  Roger