Long term water in oil normally turns to a jelly like substance but is white. Could be the jelly with added heat which has dried it out.
Oh yes. I wonder what that is. I cant' imagine it's emulsified oil /water (although there is likely someone that knows better) as I'd expect that to be more opaque due to the, well, emulsification....
That looks very nasty. I wonder if it was a mix of OAT and glycol? Very rapid googling seems to indicate you can get a gel from that:
http://mgaguru.com/mgtech/cooling/cool_121.htm
C
Oat is the inhibitor (film costing) and actually stabilises glycol in the correct concentration (22% by volume min), less can cause glycol degradation and bacterial growth in the fluid, jelly in glycol is bacteria or the colouring breaking down.