Both hoses have been changed to original OEM and the clamps have been changed to stainless solid types, not the flimsy wire type clamps. In the bottom I've installed 2 clamps. We didn't have a puddle of coolant under the car, but merely traces. The problem turned out not to be the radiator itself or the drain tap, but stems from the lower radiator spout not being 100% round any longer. As I've learned that cooling system sealant is used even on new cars, I have no problem using it. Just happy the problem has been solved. Thanks for your advise and inputs. Cheers
