heres an interesting fact.

[blur1]

Originally Posted by Greg54

I have had two radiators in 125k and have a concern that this one is not going to last. I have been investigating possible causes and have virtually narrowed it down to the fact that the core is not earthed. The action of the coolant with two disimilar materials ie the block is cast and the core alluminium will make a primative battery. And you get nothing for nothing so something has to go and being the softess the core is going to first. Therefore to halt the electrolitic action all it needs is an earth strap for the core. The same as with an aluminium hull of a boat or an outboard where you fit an anode. The anode in the car is the soft alluminum core. I have asked taxis and found out that they earth the raditor cores. So this weekend I will be grounding my radiator cores.

where and how will you be grounding the core?

[Mr_4.0]

yes i had heard of this b4, but neva seen anything to prove it.

[RMCprime]

Makes sense to me. Because the brackets that bolt the radiator to the body are plastic the core is not grounded.

Maybe just solder a small cable from one of the fins and attatch the other end to the mounting bolt.