Which coolant do you recommend for I5 NF engine?

[Ti Kan]

On Sun, Jul 18, 2010 at 03:53:15PM -0400, wadd-wadd at usa.net wrote:
> I have a '91 100 quattro and wish to do a coolant flush. I have no idea what
> is in there now, but it looks green. Which coolant is advised?

The factory-fill is what I would recommend.  For your vintage
Audi, the coolant used is blue in color, made by Pentosin, part
number G011000.  It's available at many auto parts stores specialized
in European cars, or you could order it online.

Make sure to flush the old coolant completely clean.  Different
composition coolants shouldn't be mixed.

-Ti