Using Red coolant and flushing the Blue

Chuck Pierce cpcycle at
Wed May 21 07:27:21 EDT 2003

When putting the lower mounts on the Nissen radiator be very careful, as
they can go in real tough. If you can find a bottom tap ( i think that
what it is called, you want a tap without a point ) run it through. I
would think that running distilled water through a couple times until
clear should be good enough. Something I did not look for when doing my
radiator was a plug on the block to drain the block ( my wife's BMW 525
had one ). Figure the distilled water is not that expensive it is just a
time issue.
Enjoy the chore.

Chuck Pierce
91 200tq Avant very slowly getting sorted out, two steps foward amd one
step backward

BriceW at wrote:

>I am getting ready to replace the whole cooling system. I have had all
>the parts for months  but have been lazy as my neck repair is still
>Got all new hoses, new Nissens metal radiator, new aux radiator, all new
>mounts for both, new expansion tank and cap, new temp and fan switches,
>thermostat, etc,
>I just dont ever want to mess with the cooling system again.
>Its a 13 year old car.
>Anyway I was going to use the blue antifreeze again and properly mix it
>with distilled water which I hadnt done before always using tap.
>I read on Scotts invaluable site that the red coolant is superior but
>you need to do a thorough flush with distilled water.
>I was always that once blue always blue and never go red.
>So my question is, should I take it to the dealer or mechanic who has a
>professional pressure flushing machine and have a thorough flush done
>with distilled water and then fill the old system with only distilled
>water before I do my cooling system change and then switch to the red. I
>dont think that I can do a proper flush with a garden hose. I have
>done it before but I am very leary about doing it this time if switching
>to red.
>What is the exact recommended mixture for the coolant? I have been just
>doing a 50/50? I live in Kansas so the temp never goes below -5° with
>wind chill.
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