90' Camry Coolant flush question

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Old 11 Apr 2004, 11:58 pm   #1 (permalink)
Phil
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Default 90' Camry Coolant flush question

This morning I noticed a large puddle of coolant fluid under the
engine bay on my 90' Camry. After some thorough searching I found it
to be coming from an 8mm hole on the front of the water pump (next to
the gasket). From searching through this newsgroup I assume this is
the weep hole and it's time for a Water Pump replacement. This seems
very coincedental to me because I just flushed the coolant system and
refilled it with the green stuff the day before. My question is
this... Could there be any link between me flushing the system and
this leak occuring, it's only had plain water for quite a while so
could it be the first use of green coolant fluid thats done it ?
Referring to the follonwing post it seems I'm not alone.

From: Jason James (flyhi@byplane.com)
Subject: Re: Mysterious Coolant Leak Location -- V6 Camry

Any suggestions would be great, although the bottom line is probably a
new water pump I don't want it happening again.

Cheers,
Phil
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Old 12 Apr 2004, 08:17 am   #2 (permalink)
Daniel M. Dreifus
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Default Re: 90' Camry Coolant flush question

phil_nuggent@hotmail.com (Phil) wrote in message news:<5ae9eb57.0404112058.5a95aa75@posting.google. com>...
> it's only had plain water for quite a while so
> could it be the first use of green coolant fluid thats done it ?
>

If you can get all of the green coolant out, the best mixture for your
Camry is the factory red color coolant and distilled water only.
Since you'll be changing the water pump, that may help get all the old
coolant out.
Regular water will tend to leave mineral deposits that reduce cooling
efficiency over time, and the green coolant can cause the water pump
and seal to wear out more quickly.
I'm not sure about this next part, but I think there is an
electrolytic potential between dissimilar metals in the cooling system
that accelerates corrosion of the metails, especially with an aluminum
radiator (and heads) as in the Camry, so it is important not to run
plain water.
All you can do at this point is drain it out thoroughly, flush with
water to remove any residue, and re fill with proper coolant mixture
and type.
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Old 12 Apr 2004, 06:03 pm   #3 (permalink)
Wolfgang
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Default Re: 90' Camry Coolant flush question

There's nothing wrong with the green stuff - just as good and 1/2 the price
as the Toyota brand. Just be sure to flush it every two years with new ---
or save up for a new radiator.

"Daniel M. Dreifus" <nospampls2002@yahoo.com> wrote in message
news:c5ef7dc0.0404120517.538f24d1@posting.google.c om...
> phil_nuggent@hotmail.com (Phil) wrote in message

news:<5ae9eb57.0404112058.5a95aa75@posting.google. com>...
> > it's only had plain water for quite a while so
> > could it be the first use of green coolant fluid thats done it ?
> >

> If you can get all of the green coolant out, the best mixture for your
> Camry is the factory red color coolant and distilled water only.
> Since you'll be changing the water pump, that may help get all the old
> coolant out.
> Regular water will tend to leave mineral deposits that reduce cooling
> efficiency over time, and the green coolant can cause the water pump
> and seal to wear out more quickly.
> I'm not sure about this next part, but I think there is an
> electrolytic potential between dissimilar metals in the cooling system
> that accelerates corrosion of the metails, especially with an aluminum
> radiator (and heads) as in the Camry, so it is important not to run
> plain water.
> All you can do at this point is drain it out thoroughly, flush with
> water to remove any residue, and re fill with proper coolant mixture
> and type.



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Old 13 Apr 2004, 10:05 am   #4 (permalink)
Daniel M. Dreifus
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Default Re: 90' Camry Coolant flush question

"Wolfgang" <NOwolfgangdieterSPAM@cox.net> wrote in message news:<RfFec.487$2e6.20@lakeread01>...
> There's nothing wrong with the green stuff - just as good and 1/2 the price
> as the Toyota brand. Just be sure to flush it every two years with new ---
> or save up for a new radiator.
>

Glad to hear that.
Been using the green in my '77 Toyota truck, changed regularly, mixed
with water from the garden hose, and the limiting factor at top speed
in summer with A/C on, is the engine temperature. Drove to Nevada
once, and had to keep a careful eye on the temperature gauge on long
up hill sections.
Been using Toyota red with distilled water in my Camry, and regardless
of conditions, always just below mid point on the temperature gauge.
Can idle with A/C on in 100 degree temps. or pull long up hill grades
- no change, never over heats - really great.
Plus I've put a couple of radiators in the truck.
While it's true, that the plastic upper tank in the Camry developed a
very small crack, leaking only a few drops and I replaced it with
another Toyota radiator, there's not a trace of sediment.
Supposedly the green is not silicate and phosphate free.
I imagine it would be better than plain water, and will lower the
freezing and raise the boiling point, but am not convinced it is "just
as good" as the Toyota brand.
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