There's been a lot of talk about different color coolant.  It seems that pink
and blue do not mix.  But what I have is green and orange.  After my little
explosion last week, I had the system flushed and refilled by a professional
(january is no time to do that in my driveway in MN).  The coolant was
standard green, but he said it was phosphate-free.  When I asked him what
type I should use to top it off, he said Halvoline phosphate-free, which is
orange.  Is this bad?

Is the green color an indication that the coolant currently in my system is
not phosphate-free, or are there phosphate-free green coolants on the market?

Thanks,

Doug Demarest
Minneapolis, MN
86 Vanagon