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Old 1 Week Ago   #1
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Punto mk2 coolant

Just wondering should I use the red or blue coloured coolant in my
mk 2 punto.
I think theres some difference between the 2.
also should the rad hoses be changed after 18 years????
tony
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Old 1 Week Ago   #2
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Re: Punto mk2 coolant

After a good flush with water, you can use pink Paraflu Ultra Protection G12, 50% mix with distilled water.
Inspect the hoses for cracks or soft spots, otherwise just keep using them.
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Old 1 Week Ago   #3
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Re: Punto mk2 coolant

As a general rule the blue stuff is two year, the red stuff five year.
Coolant strength is important to prevent freezing and there are various ways of checking.
If you have a meter, check the voltage between the coolant in the reservoir and a good earth. Any more than 500mV is a pointer that the anticorrosion package is depleted and the system is starting to act like a battery and eating up the metals it comes into contact with. After a change you should be less than 100mV.
If there is a bad earth somewhere the current can try to go back to battery via the coolant. Switching on the various circuits you can see changes to the coolant voltage. A big spike in reading is a strong indicator that that circuit has a bad earth path.
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Old 1 Week Ago   #4
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Re: Punto mk2 coolant

I flushed my coolant recently and used Comma XSM5L 5L Xstream G30 (red).




I have a 1.2 8v mk2b, I part added a holts radiator flush, ran the engine for a while, took bottom hose off to drain it, added water, ran engine a while, dumped it, same again, then I added the new coolant.

As ziggy mentioned to me, it is a real b*tch to bleed the air out, I had to stop on a hill, bleed the air out using the screw near the throttle body, had to do this so many times, I was also suffering from the dreaded gurgling / bubbling noise behind the dash as well as temperature needle moving up and down (as air passing through temperature sensor I imagine), but after 3 - 4 weeks it went because I persisted with the bleeding.

It is worth buying a litre of concentrate also, I had a feeling water was left and I had not drained it all so to be safe I added about 500ml of concentrate to bring the mixture closer to 50/50.

Several months on and I've had no issues, temperature needle is just below mid.
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Last edited by AyLa; 1 Week Ago at 16:08.
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Old 1 Week Ago   #5
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Re: Punto mk2 coolant

Well i think ayla has posted everything id do

Upto u if you use a rad flush

If i was sellin car - id go cheap an use blue
But if ur keepin it - go red

Again when flushing with water
Add 1litre neat concentrate as there will be trapped water!

Then add 50/50 to maintain a strong mix

Ziggy
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