Defender Rain water as coolant.





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  1. #1
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    Default Rain water as coolant.

    First question, can I use rain water collected in a bucket with a cloth filter over the top as engine coolant.

    Second question, I have the Wurth radiator coolant (Red) that I bought some time back but forgot to ask if it is concentrated or pre-mix. The label is a bit vague but it does say do not dilute which is either as it is already pre mixed with water or for sales reasons.

    Anyone have an opinion?Name:  IMG_2697.jpg
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    Last edited by one-more-landy; 2020/05/30 at 01:10 PM.

  2. #2
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    Default Re: Rain water as coolant.

    Rain water is not distilled water or "clean". It may contain varying amounts of acid and other chemicals/contaminants, depending on how polluted the atmosphere in your area is. I would rather buy the real McCoy. If you can't, rather use boiled tap water.
    The results of cooling system corrosion can be very expensive
    Last edited by hatjohan; 2020/05/30 at 01:24 PM.



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  4. #3
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    Default Re: Rain water as coolant.

    Ok. Will go back to Wurth Monday to get more and if necessary buy some distilled water.
    Thanks for reply

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    Default Re: Rain water as coolant.

    Quote Originally Posted by one-more-landy View Post
    First question, can I use rain water collected in a bucket with a cloth filter over the top as engine coolant.

    Second question, I have the Wurth radiator coolant (Red) that I bought some time back but forgot to ask if it is concentrated or pre-mix. The label is a bit vague but it does say do not dilute which is either as it is already pre mixed with water or for sales reasons.

    Anyone have an opinion?Name:  IMG_2697.jpg
Views: 928
Size:  211.5 KB

    That Wurth coolant is premixed , you add it as it is .


    Cheers

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  7. #5
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    Default Re: Rain water as coolant.

    Also, rainwater collected from the roof is far from clean. What do birds do on the roof?
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    Default Re: Rain water as coolant.

    Quote Originally Posted by Pieterk View Post
    Also, rainwater collected from the roof is far from clean. What do birds do on the roof?
    Not from roof - bucket out in the open.

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    Default Re: Rain water as coolant.

    Quote Originally Posted by one-more-landy View Post
    Not from roof - bucket out in the open.
    Still no.
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  11. #8
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    Default Re: Rain water as coolant.

    Boil it.

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    Default Re: Rain water as coolant.

    Why would one boil rain water before using it in the engine?

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    Default Re: Rain water as coolant.

    Quote Originally Posted by ekkekan View Post
    Why would one boil rain water before using it in the engine?
    Precipitate solids
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    Default Re: Rain water as coolant.

    Quote Originally Posted by jelo View Post
    Precipitate solids
    All solids, or just the carbonates??

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    Default Re: Rain water as coolant.

    Quote Originally Posted by RoelfleRoux View Post
    All solids, or just the carbonates??
    OK, maybe I am complicating it by adding the "boiling" angle. But I come from an Anglia and a Cortina mk1 background where in those days, frequent top-ups were at the order of the day. Significant carbonate ( "lime") deposits ( the same that you still found in today's' kettles and urns and geysers) in the cooling system was rather common.
    Nowadays, the cooling systems are more refined (or supposed to be) and more "sealed" and requires less if any top-ups.

    BUT, impurities may be more of a danger - me thinks.



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    Default Re: Rain water as coolant.

    Quote Originally Posted by ekkekan View Post
    Why would one boil rain water before using it in the engine?

    "boiled tap water"



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    Default Re: Rain water as coolant.

    Put the dam water in, will do nothing, one or two litres of water will hardly contain enough of anything to cause a problem, how long does it take a kettle to scale up after boiling thousands of litres.
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  21. #15
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    Default Re: Rain water as coolant.

    Distilled water is for batteries. Nothing wrong with tap water and coolant for radiator so long as ratios are correct. Who knows what is in rain water collected in a bucket unless analysed.

    my question is why would you want to do that in any case when you have tap water? Water the garden with rain water.
    Last edited by BruceHun; 2020/05/31 at 11:19 AM.
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  23. #16
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    Default Re: Rain water as coolant.

    Have you guys probed a radiator with your finger,as well as the cap.
    Where does the muddy slush come from ?.
    The inside of the overflow bottle the same.
    I may add , a system left as is for a long time , points to unfiltered tap or rain water.
    2C

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    Default Re: Rain water as coolant.

    are you talking about rain water to get you out of a emergency that radiator needs water, or using it permanently with antifreeze
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    Default Re: Rain water as coolant.

    There has been an increase in lost engines in Zim with the use of borehole water in radiators.

    Holes form in wet sleeves and internal corrosion elsewhere. An increase in electrolysis due to the minerals in the water has been muted.

    We've noticed along with this that Ph levels play their part in the corrosion of aluminium and copper components.

    It's akin to cancer, engine cancer as the effects are all internal and unseen until failure occurs.

    Just putting it out there.

  26. #19
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    Default Re: Rain water as coolant.

    Water is not a good coolant.
    Use proper coolant.
    To dilute it to the correct ratio, just about any potable water will do.
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    Default Re: Rain water as coolant.

    Quote Originally Posted by James Stevenson View Post
    There has been an increase in lost engines in Zim with the use of borehole water in radiators.

    Holes form in wet sleeves and internal corrosion elsewhere. An increase in electrolysis due to the minerals in the water has been muted.

    We've noticed along with this that Ph levels play their part in the corrosion of aluminium and copper components.

    It's akin to cancer, engine cancer as the effects are all internal and unseen until failure occurs.

    Just putting it out there.
    my point exactly. Why are they using water only?
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