I would top up with water if it's just for a few days. Even mixing coolants
for a few days is of little concern. What is important is the service is a
COMPLETE drain/rinse/replace.

Green is NEVER phosphate free, unless it's a mix of blue
VW/Audi/Porsche/Autobahn/Jaguar and yellow Mercedes. Same stuff from the
same Basf Corp. vat just different tints.

At 09:10 PM 09/11/2002, you wrote:

>   I have no idea what kind of coolant the PO put in
>there: it's green, but in our pre-sale discussions he seemed acutely aware of
>the requirement for phosphate-free coolant.
>So: what would you top the tank off with?