I don't think it's an electrolysis issue mate, sounds more like physical strain or it could just be a poor seal
It is nice an tight in the mounts?
Steve
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I have had similar issues in the past. Took the rad out and had it pressure tested, leaking round the bottom seal after 2 years. Had the crimp tightened and good for another year till it started seeping again. Put in another Rad before I sold the car and the leaky one is in my garage for emergencies. The one that I still have came from the UK. The last one I fitted sourced via Sydney was made in the UAE. You would hope the the Saudis can make a good rad.
See http://www.aulro.com/afvb/p38a-range...le-4x4ing.html Post #5
I bought one last year, doing well.
Good luck mate
Steve