[s-cars] Gelling coolant
gislio at gmail.com
Tue May 1 09:31:05 EDT 2007
Just thought I would wrap up this thread and thank all participants.
In the end my coagulation/gelling situation was far less dramatic than was
indicated by the contents of the expansion tank. I have to assume that the
jelly was of lower density and was rising to the top.
Anyway I flushed the contents of the cooling system thoroughly. In the
first round I added almost a cup of dissolved automatic dishwasher
detergent. This was followed by three flushes with clean water. Every
flush was followed by a ride around the neighborhood with the heater on
high, until fully warmed up.
Finally, I added 4.5 liters of G12 antifreeze and topped up with water.
I should add that I was somewhat mystified by the lack of a draining cock on
the radiator. In the end I pulled the lower hose, which wasn't a big deal
and toward the end I didn't bother tightening the clamp between flushes.
All in all, a good day in the driveway.
On 4/17/07, Tom Green <trgreen at comcast.net> wrote:
> I'll jump in to say, no, it hasn't been mentioned in this thread yet,
> I had considered it, but never mentioned it since Gisli wrote that the
> coolant was still mostly pink. If it were oil globules or milky coolant
> I felt he would have recognized that and said "I've been robbed".
> It appears to be the classic mixing of incompatible coolants.
> I was joking about the Icelandic hot water but had to mention it since
> I had these visions of the deposits in the mineral pools and smells
> that stay with you a long time.
> On Apr 17, 2007, at 1:20 PM, Pasqualoni, James E wrote:
> > Gisli,
> > I am late to this thread, so please excuse me if this has already
> > been mentioned-are you sure there is no oil in the coolant, ie head
> > gasket leakage?
> > Jim
> > -----Original Message-----
> > From: s-car-list-bounces at audifans.com [mailto:s-car-list-
> > bounces at audifans.com] On Behalf Of Gísli Óttarsson
> > Sent: Tuesday, April 17, 2007 1:18 PM
> > To: Tom Green
> > Cc: s-car-list at audifans.com
> > Subject: Re: [s-cars] Gelling coolant
> > Tom:
> > I nearly responded to your previous message about de-mineralized
> > water by commenting that that is what comes out of our cold-water
> > taps here in Iceland. No such luck for the hot-water tap. This is
> > so polluted by minerals and sulfur that you would think someone let
> > eggs rot in your bathroom. Good for the teeth and the sperm-count,
> > I suppose, but I would not dream of letting it anywhere near my
> > Audi. And no, the car only recently arrived on Icelandic shores so
> > it is a near certainty that this is not what's ailing the cooling
> > system.
> > Gisli
> > On 4/17/07, Tom Green <trgreen at comcast.net> wrote:
> >> I think your caution is don't shock the engine by removing the
> >> coolant
> >> and/or giving it a big dose of cold water. But, it doesn't require a
> >> long cool-down period before draining since the temps are
> >> equalized by
> >> running at idle. I would be cautious about dumping a lot of cold
> >> water from a hose with lots of pressure and flow into the reservoir.
> >> Besides, you are likely to cause the thermostat to close and really
> >> slow down the process. Use some warm water to temper the water if
> >> you
> >> are nervous about it. Add slowly in any case, you won't use that
> >> much
> >> per flush. I would suggest using some of that Icelandic geo-thermal
> >> water but I've seen the mineral content. :-) Hmmmm, could that be
> >> what's in the coolant now? :-)
> >> Tom
> >>> Date: Tue, 17 Apr 2007 09:30:20 -0400
> >>> From: Mark Pollan <mark.pollan at verizonbusiness.com>
> >>> Subject: Re: [s-cars] Gelling coolant
> >>> To: s-car-list at audifans.com
> >>> Message-ID: <000a01c780f4$8b9100e0$910e9283 at mcilink.com>
> >>> Content-Type: text/plain; charset=iso-8859-1
> >>> Best/required to let her cool down before you drain and refill no?
> >>> Mark
> >>> -----Original Message-----
> >>> From: s-car-list-bounces at audifans.com
> >>> [mailto:s-car-list-bounces at audifans.com] On Behalf Of G?sli
> >>> ?ttarsson
> >>> Sent: Monday, April 16, 2007 7:13 PM
> >>> To: Tom Green
> >>> Cc: s-car-list at audifans.com
> >>> Subject: Re: [s-cars] Gelling coolant
> >>> This seems straightforward enough. I'll probably have a go this
> >>> week-end, if weather permits.
> >>> Gisli
> >>> On 4/16/07, Tom Green <trgreen at comcast.net> wrote:
> >>>> I'll have to defer to Dave Dawson on the details, but, you have the
> >>>> right idea, and the Finish should be fine. This is dishwasher
> >>>> detergent, not the dishwashing detergent for hand-washing dishes.
> >>>> I suggest about a half cup or two times the normal dishwasher
> >>>> amount. Drain the coolant first and refill with water and add the
> >>>> Finish.
> >>>> You don't want to operate the car, just run the engine until it
> >>>> gets up to temperature, then about 15 to 20 minutes at idle to let
> >>>> the cleaners work in the system including the heater. Then drain
> >>>> and refill with water, bring to temperature, drain and repeat until
> >>>> the coolant water is perfectly clear. It may take several times to
> >>>> remove all the old
> >>>> coolant and the dishwasher detergent. Even the low sudsing
> >>>> dishwasher detergent
> >>>> can foam some, so it is important to completely flush all traces
> >>>> from the cooling system or a slight amount of foam can cause an air
> >>>> block in the system and a localized over- heating can occur. Who
> >>>> knows if it is compatible with coolant?
> >>>> I suspect those fleet maintenance guys have a power flushing
> >>>> machine to expedite this process.
> >>>> It is a good practice to use de-mineralized (soft) water for the
> >>>> make-
> >>>> up portion of the
> >>>> coolant.
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