Re: S Car antifreeze

[Igor Kessel <four_rings@worldnet.att.net>]

gengstrom@NOVALIS.COM wrote:
> 
> I seek the wisdom of the list.  I was in the local import auto parts store
> and they had Pentosin phosphate free blue antifreeze on the shelf.  I know
> the PO of my S4 has regular anti in it, and I remember talk of removing it
> as its terrible for the cooling system in the Audis.  Is there an approved
> method of getting the green stuff out and the blue stuff in.  I intend to
> get 3 literes of the Blue as it indicates a 1:1 mix with water (preferrably
> distilled I would imagine)  What is everyone running out there and more
> importantly is there a GOOD way to flush the old out.  I figured to drain
> the radiator and pull upper and lower hoses, fill with water, run, repeat.
> Any help would be great.

3 litres at 1:1 will give you 6. The 200 takes 10 and I don't see an S
car taking less than that. Better buy extra than less.

When I was using the conventional antifreeze (before the Evans era) I
would mix 2:3 as water has a lot higher specific heat capacity than the
ethylene glycol. The idea is to have as much water as the lowest t°-re
allows in you climate zone. The distilled water, of course.
I would mix a few different proportions, first measure their specific
gravity and specific viscosity, then stick all Petri cups into the
environmental chamber in my lab and drop the t°-re down to -60°C. Then
draw a graph with the Crystallisation t°-re points on the ordinate vs.
the Viscosity on the abscissa. Yeah, I need to get a life :-)

My 2 kopecks in the old denomination.

-- 
Igor Kessel
Three turbo quattros