Quote Originally Posted by duskylim View Post
Dear Sirs:

I recommend using just pure distilled water (or something like Absolute pure drinking water - as it is vacuum distilled) with little or no 'coolant'.

Probably the only other coolant I would recommend would be ethylene glycol mixed about 50/50 with water.

The combination has both a lower freezing point than either (not really that important in the Philippines) and a higher boiling point than either pure ethylene glycol or water alone.

You can also add 5 to 10 ml of something like the old Shell blue 'coolant' that becomes milky when mixed with water - it will help prevent rust - do NOT use the whole container.

I believe that most 'wetting' products merely reduce the surface tension of the water - which honestly can be done by a teaspoonful of any strong liquid detergent - check out Wikipedia on 'surfactants'.

Oh BTW - Never, never use tap water in your radiator.

Best Regards,

Dusky Lim

Wilkens Distilled Water. OK rin at safe pa.