[Vwdiesel] Coolant

[Gerry Wolfe]

Certainly not an expert, but my $0.02Cdn:
- Flushing every couple of years gets rid of accumulated crud;
- What about long-term electrolytic breakdown?

Sorta like my feelings on using quality dyno oil with frequent changes 
instead of longterm synth oils.

rgds to all, g.

----- Original Message ----- 
From: "mikitka" <mikitka at earthlink.net>
To: <vwdiesel at vwfans.com>
Sent: Friday, November 18, 2005 15:27
Subject: RE: [Vwdiesel] Coolant


>I just went back with regular Prestone antifreeze in my 91 TD Jetta. I did
> the 50/50 mix. The winters here in NC don't get to cold for very long and
> I'm under the impression that the higher concentration of water in the
> coolant the better cooling properties.
>
> Nick
>
>
>
>
>
> Gang,
>
> I'm wondering what the current thinking is relative to coolant selection
> for the IDI diesels.  TDIs, or at least mine, call for G12 coolant.
>
> Recently I changed a thermostat on a 2000 Dodge minivan, where there
> was the "red stuff" coolant.  The thermostat failed mechanically due
> to metal fatigue, thus falling apart.  No sign of corrosion, even when
> I viewed the failure under a microscope.  The most impressive aspect of
> this job was just how clean the engine passages were.  The vehicle has
> 118kmiles, and I think the interior passages and radiator were the
> cleanest I've ever seen.
>
> Today, as the temps continue to drop, I'm faced with putting some
> glycol into the 91NA that my daughter and I did a cylinder head on
> this past summer.  I'll use the normal run-of-the-mill glycol, for now,
> but I realize that long term I need to learn more about the options.
>
> Anyone have some pointers?
>
> Val
>
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