overheating

thanks :)
this radiator dont have a radtioator cap for some reason so i gues i will have to try to fill it up by disconecting the top hose for it and then fill it thru that hose, thanks:)

actualy this radiator has worked real nice for two summers no one seams to know why but it actualy does its just as big as it can bee i dont have any space left;)
but i am looking for a nice aftermarket one have talked to diferent companys that import and sell car parts over here and i just havent figured out who of them sells the best radiator for the best price..