Quote Originally Posted by Alitis007 View Post
The fact of the matter is those radiators have plastic tanks, the combination of ally tanks with ally core is the problem. The difference in your situation is your motors had cast iron heads and not aluminium heads so the 33% ra rating of your coolant ( assuming its a concentrated mix of 980ml/l ethylene glycol for cast iron blocks ) may have had enough alkalinity to neutralize the electrolysis.
There is no problem. If done correctly there is still no
Issue. If people against using ally would throw more facts instead of scaring people then it wouldnt be so bad. 99% of the time the factory radiator is more than enough. I don't know why ally is so scary.

The full ally rad in mine now has no issues with electrolysis, I check it regularly running a 50/50 mix. How many diesel patrols have alloy heads?