no i just moved to Queensland, which is much hotter then where i used to live, Melbourne..
no where near freezing temperatures... maybe a couple of morning in Melbourne reached 3 degrees, but here in Queensland the temperatures during the day are consistently 25 deg+,, night time probably wont fall below 15 degrees.
I did have a power steering leak at one point, basically the sound would get worse but then go back to being normal upon topping up the fluid... (i think i had green at that stage)
then I got the leak fixed, it was one of the hoses that dispersed the fluid to both wheels (not sure what its called). anyhow, it was fixed by a professional who built a replacement hose.. and now I've got red fluid (i think the mechanic follows the specs in the handbook)
if what you guys are saying about the climate is right. could i have an air bubble in the system. how can i flush the bubble out or test for that??