interesting coolant stuff

[marc_scirocco@sympatico.ca (Marc Scirocco Québec)]

Antifreeze does not cool as good as water.

60% is what I use around my part of the world (-40). You should be ok with a
25%-30% mix.

Never run only water as a coolant, as there are lots of aditives in the
antifreeze stuff to help prevent nasty chemical reactions with
iron-aluminium, etc...

Always replace the thermostat.

And last, it could be air bubbles trapped inside the motor, the head more
specifically.

I also experienced that by running castrol syntec 5w50 helped to lower my
oil temp, and general motor temp as well.

Cheers.

Marc
'83 Scirocco
'88 Scirocco Slegato

OT - I just bought a celeron 333 for 130 canadian (85 US), and have
configured it as my new server/gateway, and man this boy is fast compared to
the old P200... woohoo

-----Message d'origine-----
De : scirocco-l-admin@scirocco.org
[mailto:scirocco-l-admin@scirocco.org]De la part de Allyn
Envoyé : 23 mars, 2003 21:46
À : scirocco list
Objet : interesting coolant stuff


ok, so i fixed a hose on the rieger today, and decided to do some flush
action. flushed system, and actually threw some antifreeze in there this
time (i usually run just water). i went with about 60% antifreeze mix. now
check this out:
temps prior:
water - centered over led, max of 3/4 when fan turns on.
oil - normally 90-100 when moving, peaking at 110 during extended idle in
traffic, but will settle back to 100 if a/c is turned on low (due to
radiator fan running in slow).
temps after:
water - towards upper part of led.
oil - minimum 100 when moving (more like 105), gets to 110 pretty fast,
stays at 110 even with a/c on low.

i realize antifreeze doesnt cool as well as water, but is it THAT much
worse?
also, could it be that all is good, but the antifreeze is raising the
boiling point, so where the system was incapable of going much over 100c
before, now it can more easily?

all other parts of cooling system are still working perfect, fan operates on
its own. nothing was done to tstat, etc.

whatcha think? should i thin out the mix? what is the absolute minimum i
should run to ensure the proper protection that antifreeze is supposed to
provide? (as far as lubrication, etc).
Al


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