Yes it can be done. However the calculation needed for this is beyond our naive mathemic skills :).
like me, my margallah has a bad hadbit of reducing coolant, however never any other issues like heating etc. so i just keep it topped up mostly with pre mixed ethylene glycol based coolant.
i have tested different coolant with the guage that i have and have found guard, aim and concept coolant as good however nasa came out to be same as water no better at all. toyota coolant is also good and so is honda type 2.
now back to my radiator, i have been able to identify a puncture in the upper plastic body of the radiator. i have already got the upper plastic body of the radiator changed however reduction issue remains. can u suggest any good radiators made locally and new and reliable. however since no other issue with the current one so i might continue to use it. just intend to start working for changing the current one if i have to.