i recommend toyota Long Life Coolant, actually its ethylene glycol based coolant which is recommended for use by Honda and Toyota. By the way Caltex is also Ethylene Glycol based coolant. All good coolants are Ethylene Glycol Based (as they should be).
I have seen some local brands selling Ethylene Glycol based coolants, costs around 500 Rs for local premixed 1 litre (no need to add distill water) like "concept" brand.
I checked last week Total Ethylene Glycol (france Imported) pre mixed bottle cost was 640 Rs for 1 Litre.
Caltex is concentrated and costs a bit more like 1200 Rs for 1 Litre however it will make 2 litres of coolant considering 50/50 mix.
You can find toyota coolant in both concentrated and pre mixed form. concentrated would be thai made (1Litre bottle - 1500 Rs) probably and premix will be in 4 litre bottle Made in USA (2500 Rs) probably.
recently i ordered 4 Litres of premixed prestone ethylene glycol based coolant from ishopping website for around 1200 Rs Made in USA. However what i recieved was a concentrate. so now i use it only to top up as and when required. i think i have got around 3.5 Litres of prestone concentrated coolant with me now. Very good product. transparent in colour.
one more thing all ethylene glycol based - good quality coolants have lubricative additives in them which not only prevent rusting but also lubricate water body and increase mechanical moving parts life.
if it was me, i would stick with toyota premix LLC Made in USA 4 litres pack. you would need to get 2 packs probably. i dont wanna contaminate the coolant during mixing in the bucket or buying distill water (which i think probably is tap water - since its PK).
Better still, order concentrated 4 litres bottle from Ishopping.pk. meanwhile it arrives, collect your home AC drain water in bottles for few days (its actually distill water). go on your trip. once you come back, make 8 litres of coolant and pour it in your ride.
https://www.ishopping.pk/prestone-extended-antifreeze-coolant-3-78-ltr-price-in-pakistan-325955.html
I have pasted the link of the product i ordered and got Prime concentrated Coolant
(Prime is also prestone made in USA. so no worries there).
Hope this helps.