sir plastic pa ba radiator mo?you can have it checked up sa DENSO Coolmate in Pasong Tamo extension, near Universal Motors Corp. (Nissan casa). They can replace the plastic top of your radiator with brand new plastic tops, and at the same time they will overhaul it na rin. DENSO is the brand of automotive parts and components.

the plastic top of the radiator is there for a purpose. in case you suffer an overheat, the pressure will build up inside your cooling system, looking for a way out. sa tanso, usually hindi nga ito basta basta masisira like the plastic, but it can affect your cylinder head gasket, as well as the cylinder head itself, kasi dito lpipiliting lumabas nung pressure, instead na doon lang sa plastic top ng radiator lalabas. it will also preserve your car's overall resale value, in case you want to sell it in the future.

hindi rin naman marupok ang plastic top, the one in my corona lasted for 12 years before it cracked, it's ok as long as you properly maintain it with distilled water.