Caltex 700/ ltr., cuore will consume 2 ltr.
I used Zic, it was I think 2000 for a four ltr. bottle. Shared it with a friend.
Toyota long life coolant is about 2600 for a four ltr.
if you can find original caltex in lahore, go for it. Also share here from where you buy it.
Best of luck.
the rates i mentioned above may vary, since I had such survey two years back when I was willing to change coolant.