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Thread: anti-freeze advice

  1. #1
    Regular Member dannydm1's Avatar
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    Default anti-freeze advice

    Hi all, last week i used an antifreeze tester, and it showed it needed topping up.... so i took 1lt out, and added a 1lt bottle of coolent (which was blue in colour, but said on the bottle suitable for all petrol cars)

    http://www.commaoil.com/productsguide/view/6/301 - coolent used.

    tested it today, and still saying it was a weak solution, so called into wilcos, to get another litre of the same stuff.

    they told me its the wrong antifreeze, and that i need red rather then blue, as they say it will cause rusting.

    when asked it i can just topp up with the red stuff they sold me they said no, and that i will have to now flush the whole system...

    anyone shed any light on this, and if this is right how do i flush the system?

    the stuff they have now sold me is this - http://www.commaoil.com/productsguide/view/6/351

    anyone comfirm this is the correct antifreeze.

  2. #2
    Regular Member rich r's Avatar
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    As a general rule, don't mix different colours of antifreeze. Whilst it's possible that two makes with different colours may be chemically identical, it's unlikely.

    You will have to drain the lot and refill - the procedure in the Haynes Manual is pretty easy to follow.

    For the Vectra C, it's typically red or orange in colour, usually indicating an OAT antifreeze (though the handbook says glycol based, which are usually blue or green). You'll need about 6 litres of coolant for a 1.8, or 8 litres for the other engine sizes. That's going to be made up of 50/50 mix of antifreeze and water for the UK, so if you buy a 4 litre bottle of antifreeze, you'll have enough.

    The genuine Vauxhall stuff actually is pretty good, and isn't any more expensive than places like Halfords. Also if you go along to a Vauxhall dealer and ask for antifreeze for your Vectra, they'll be certain to supply you with the correct stuff

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    Regular Member shane31's Avatar
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    Yes agreed i read some where that if you mix them there is a chance of gunk build up and a blockage.. Blue was designed for the old cast iron blocks but now were all aluminium blue is outdated.. Red also acts as a coolant as well as an antifreeze.. And i believe all vx should be 50/50.. There aint much in the branding to be honest..

    http://www.motormania.co.uk/product/...--5-litre.html

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    Regular Member shane31's Avatar
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    Dam double posting again grrrr
    Last edited by shane31; 22nd November 2011 at 16:21. Reason: double post again !!!!! Sorry

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    Regular Member dannydm1's Avatar
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    they sold me 5lt concentrate - http://www.commaoil.com/productsguide/view/6/351

    so looks like ill have to flush the whole system, should i stick some water through the system too to clean it out? how do you drain it?

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    VIP-Member Das's Avatar
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    Default

    Never mix coolants regardless what it says on the bottle. Blue antifreeze is so old school I have no idea why its still available these days. I would defiantly flush the system a couple of time and refill using the Red OAT antifreeze. There is a good write up on Antifreeze in the Traders section, from Opie Oils.

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    VIP-Member Das's Avatar
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    Regular Member shane31's Avatar
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    just give the bottle a rinse and i would personally take the hose off the top and bottom of rad and stick hose in just to wash it through.. Drain and refill with 50/50 red and water..

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    Regular Member rich r's Avatar
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    Removing the bottom radiator hose is the traditional way to dump all the coolant out

    Just try to catch as much as possible and dispose of it safely as it's quite toxic to animals.

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    Default

    Some of the cheap DIY antifreeze testers don't work with certain types of antifreeze. i.e. it will give you a false reading.

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