Hi, preparing our 1973 +8 for the winter here in Scandinavia, I'm about to change the radiator anti-freeze coolant (yes, suitable for aluminium engines). By adding more of this stuff to protect down to some - 30 C, there is an enhanced risk of leaks. We have encountered leaks before, mainly at the bottom hose connection to the radiator. Currently I'm using two clips, which kind of cured the problem. Question is now if we should use a Radiator Sealant /Stop leak additive to prevent leaks? Would there be anything that talks against this? And is it a permanent fix? Thanks for your views and advise. Cheers /Finn
