[s-cars] What coolant to use? Other Q's

[Ivan Demkovitch]

List,

Right in a middle of my TB change I realized that coolant need to be changed 
also.
Didn't order it online and wonder what brand to use for Urs4 93'
Hwo much do I need and what should I get? Would it be good idea to get it 
from my local friendly dealership? How much does it cost?

I have top hose removed and Water pump removed. I see some whitish deposits. 
Is that a good time to do flush/cleaning of a system? If so, how?

Thanks,
Ivan

Urs4