Astra mk3 1.4 8v coolant?
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Astra mk3 1.4 8v coolant?
by N1ova on Thu Sep 29, 2011 9:49 am
Hi im just about to change the coolant in my m reg 1.4 8 valve astra. What colour antifreeze should i buy for it? I have always used red in the fronty. Also anyone got any ideas as to how much coolant it holds? Cheers Adrian
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Re: Astra mk3 1.4 8v coolant?
by Drift on Thu Sep 29, 2011 10:01 am
Not sure on the amount but I just used the blue stuff you get in any garage or shop when I had one.
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Re: Astra mk3 1.4 8v coolant?
by RatCav on Thu Sep 29, 2011 10:03 am
The older 8v engines use the blue stuff. Just change it annually.
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Re: Astra mk3 1.4 8v coolant?
by Dave_RAYNET on Thu Sep 29, 2011 11:25 am
from memory, from empty when i did the head gasket on mine it was about 5 litres. I've always used the red stuff. Last december the blue stuff i had in my astra froze solid. 
Luckily it didn't take any hoses.
Luckily it didn't take any hoses.
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Re: Astra mk3 1.4 8v coolant?
by RatCav on Thu Sep 29, 2011 12:09 pm
Blue stuff degrades after a year or so and loses its quality hence changing it annually. Also a lot of people suffered from frozen engines as the mixtures were incorrect. A lot of garages just chuck some in to change the colour and that cannot cope with the -18 degrees we had temperature wise. That sort of temperature you need a 50/50 mix or more to prevent freezing.
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Re: Astra mk3 1.4 8v coolant?
by N1ova on Thu Sep 29, 2011 12:48 pm
So if i use 4 litres of blue i should be ok? I might buy the red from some comments on here. Confused now 
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Re: Astra mk3 1.4 8v coolant?
by Drift on Thu Sep 29, 2011 12:56 pm
Seriously the different colours do not matter for that engine, just get the mix correct 
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Re: Astra mk3 1.4 8v coolant?
by N1ova on Thu Sep 29, 2011 1:08 pm
Cheers Drift, Can i put 4 litres blue in?then 1 litre water?
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Re: Astra mk3 1.4 8v coolant?
by Drift on Thu Sep 29, 2011 1:15 pm
I would use two litres of water at least
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Re: Astra mk3 1.4 8v coolant?
by fogman on Thu Sep 29, 2011 1:32 pm
50/50 is normally the ratio warm in the winter & cooler in the summer
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Re: Astra mk3 1.4 8v coolant?
by RatCav on Thu Sep 29, 2011 2:10 pm
The mixture levels for ambient temperatures are usually printed on the blue stuff bottles
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Re: Astra mk3 1.4 8v coolant?
by MrTom on Thu Sep 29, 2011 9:35 pm
Just out of interest why can't you just put full concentrate in? Surley that would ensure no engine freeze???
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Re: Astra mk3 1.4 8v coolant?
by N1ova on Fri Sep 30, 2011 8:58 pm
That's what i was thinking. Would 100% mix damage it?
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Re: Astra mk3 1.4 8v coolant?
by Drift on Fri Sep 30, 2011 9:05 pm
Im not 100% sure but I think the water and anti freeze have a chemical reaction to produce the best cooling and antifreezing plus lubricating also anti rust qualities.
A lot is going on with the mix but I am no chemist.
A lot is going on with the mix but I am no chemist.
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Re: Astra mk3 1.4 8v coolant?
by john boy on Sat Oct 01, 2011 7:05 am
If you use 100% antifrezze there is a chance it will frezze i know it sounds crazy but it's do with the chemical reaction when the water added. Also i know there is a difference inthe vw blue g11 and pink g12 as when i was vw if you mixed the it turned to a glopp and we had to flush the system with chemicals.
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Re: Astra mk3 1.4 8v coolant?
by MrTom on Sat Oct 01, 2011 5:10 pm
Fair do's mate. It dosn't make sense to me but you sound like you know what your on about.
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