coolant colour

[icepatrol]

anyone ever heard of this.
sample coolant drained out and appeared to be green in colour.
after 24hrs the same sample had changed to a orange colour.
any ideas ???

 

[Csail]

Mixed with rust?

 

[dmayes]

Colours

Main fluid may be orange in colour if anti-freeze has been added, blue copper sulphate crystals may be present in suspension making the resultant colour green (orange plus blue) the copper stuff may have settled over 24 hours leaving the orange fluid.