@bluespark
follow salmanali1 advice first go to radiator wala,get ur radiator fully serviced, of course in 11 years , it will be discolour in appearance,
so repaint from outside & go only for Toyota coolant( & better if u buy from toyota 3s dealer to make sure) otherwise u know in pakistan wat happened....
@uaziz90
seems ur gaskit blown up,anyway check from mech.
remember if radiator & all realted hose pipe,water body, gaskit is ok, not a single drop of water /coolant can be lessen( it should not decrease single drop) how much older it is.