[Paul F]

I've had a copper radiator in the Cobra for 12 years. No problems. I wanted to re-route the hoses with a new custom radiator and when I did so, I used aluminum.

3 years later and the bugger is leaking. Clearly it is electrolysis. Sure enough, I have about 150mv between the radiator water and ground. I've tried everything to get the voltage reduced. Checked all ground connections, added temporary ground connections. I have not yet isolated which circuit is the offender and I will try to do that. If I find it, I'm really questioning if I will stick with aluminum or go back to copper. I see no advantage in my case to stick with aluminum as copper did the job.

Check your radiator voltage before it's too late!