Rainwater in cooling system.

Any advantage using rainwater as opposed to tap water in my rad? Cant be arsed getting distilled water.

Can't hurt, seeing as how it ought to be soft and have nothing else much in it.
Whoops, it could be acid rain, though maybe not over Eire!
If in doubt, use the ice that forms inside your freezer. That should be the equivalent of distilled water. Or almost. But then actually it is the anti-freeze that you stick in it which is the most important and the quantity you use.

I boil water in the kettle a couple of times and use that. The minerals in the water stick to the inside of the kettle (furring up), thus I am using demineralised water.

mick the builder said:

Any advantage using rainwater as opposed to tap water in my rad? Cant be arsed getting distilled water.

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First world problems

doriz said:

First world problems

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I'm having trouble getting perrier

mick the builder said:

I'm having trouble getting perrier

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Just turn the cold water tap on.

I have a de humidifier in the house, spits out loads of condensate each day, should be pretty much like distilled water perhaps the air may contaminate it a bit though.

mick the builder said:

Any advantage using rainwater as opposed to tap water in my rad? Cant be arsed getting distilled water.

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Better filter the dirt and bird sh1t out of it

Filled me rads straight out of the tap (+coolant) in all my vehicles since I started driving, thought distilled water was just for batteries.

But then we do have soft water down here in the 'proper' south west

mick the builder said:

Any advantage using rainwater as opposed to tap water in my rad? Cant be arsed getting distilled water.

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non, tap water is perfectly fine with the correct amount of coolant,only issues ive found are not using coolant not water type