Update: they were skeptical about getting the pwr unblocked. Pwr isnt able to open them up and even if i find someone to open it up, it would cost $730 to replace a core. Bit of a shame considering it is only 4 years old and hasnt done many kms, not sure what went wrong,pwr pointed in the possibility that the engine is too old or coolant not fresh. I didnt want to play with flushing etc because i just want something that works now. In addition i like the idea that the copper one can be opened up and cleaned by a radiator specialist.
Red devil recommended a copper/ brass Adrad radiator so I got one fitted. They flushed and tested the whole system and it runs cooler so far. I just need to put the aftermarket sensor in. Hopefully the radiator keeps everything running fine on the big lap!
