[Vwdiesel] Heater Core Electrolysis question

[paulr]

Hmmm, interesting.  My owner's manual is quite clear about the
requirement for distilled water and G12 on this 2000 MY TDI.  Wonder
if the mineral salts in tap water may accelerate electrolysis?

BTW,  never realized *why* the rad, et al, are mounted on dielectric
(insulating) pieces.  Just assumed it was for weight savings.  This
thread put the subject in a new light for me.  Thanks to the original
poster for the heads-up.  Wouldn't have thought of it in a million
years....

Regards,

Paul

2000 Golf TDI



Hotmail Staff wrote:
> I'm in the middle of replacing my heater core, and had some similar 
> questions. I had an old tech tell me to run a few strands of copper wire 
> into the heater core, out the hose outlet, and to a ground on the 
> firewall to prevent this. My old one was leaking, and I still have it 
> (out of the car), so if I can do any tests to help figure out how to 
> prevent this I'd be glad to, because my new one has plastic tanks and an 
> aluminum core (which will die fast with electrolysis). While 
> everything's apart I want to make sure I do this right, because I don't 
> want to do it again for another 20 years...
> 
> George
> 
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Paul Reich                Electrical Engineer

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