"The problem with doing nothing is not knowing when you're finished" - Benjamin Franklin

just wondering what every one uses 

some times i just cant get the windscreen as clean as id like

A good Recipe:

For 1 litre about 500ml of water add 150 - 200ml of metho, 1/2 - I cap full of cloudy ammonia and 1/2 cap of dishwashing liquid then

make up to 1 litre with water. Dont use too much detergent as streaking may occur and it can cause crazing on some clear plastics, you can

leave it out if you want as its only used as a wetting agent. The Ammonia increases the pH and helps to remove any grime etc and the metho

acts as a solvent and aids evaporation. spray on and wipe off with newspaper or a paper towel.

I was an Industrial Chemist before I retired and know that this is close in concept to commercial formulations.

Hope this helps

Steve

hmm funny doug, didnt think there was rain in space??

When we lived in Western Australia, we were advised to use only 'water' in the container for screens....

The reason was in case the vehicle broke down, that it would be another possibility for 'drinking water'.  If you put chemicals or soap in the container, then it couldn't be used for drinking.  

As a result, we always followed that advise.  Fortunately, we never had any serious break-downs but we were always prepared.  I guess for city driving or those in in non-remote areas, it wouldn't matter.

that my 1-1/2 cents worth.  

Anvid's advice was correct. In Australia, Formulators of windsreen washer additives are not permitted to use certain solvents
such as Methanol, Isopropanol and others in their products for this reason and must consider the human toxicity of
any component in the product. However, to my knowledge this is self regulatory and not policed. I would suggest that you obtain
an MSDS (Material Safety Data Sheet) for the product , usually available fron the manufacturers website or direct
from them if you think that drinking from the resevoir may be a possibility. Look for the Poisons Shedule classification if it is S5 or S6, it
is considered to be poisionous. Personally, I wouldn't use additives in remote areas as the possibility of poisoning is not what you want to worry
about if dying of thirst.

Steve (Product Development Chemist)

This glass cleaner is brilliant, it costs a lot more than Rain-X but it lasts a lot longer too.

 

http://www.zas.com.au/product/416/zas_nano_glass_kit.html

Shannon Lush the cleaning lady now says we should not use newspaper to clean glass as the ink has changed. Just use paper towel (or is that panty hose?) I think she says. And of course, white vinegar!