Quote Originally Posted by miko101130 View Post
madumi tap water at madami mga minerals... kaya nga nakalagay sa bottle ng coolant na "use only with de-mineralized or distilled water"
Tap water is fine unless the turbidity in your area is very high.

Putting distilled water into your loop does nothing as it will become contaminated with the deposits already lining the engine. This is just uninformed anal retentiveness at work.

Just flush the engine properly during prep prior to refiling it with coolant and make sure you're not just sourcing your water from a well and mixing it with your coolant.

If you are still having problems with that practical notion just get pre-mixed coolants.

TS' ride is overheating for a host of reasons, supposing his radiator and adjunct subsystems have no leaks yet he is losing coolant, then the leak isn't one that drips but one that releases vapor.

Make sure that all seals are adequate, from the radiator cap, temp probes, hoses to the overflow tank.

But the fact that the rate of vaporization is so high means that the radiator is already problematic. Have that flushed or have it replaced depending on the level of corrosion.

And depending on the design of the radiator, if it has a plastic tank there's a good chance that micro-fissures have developed along the seal in contact with the header plate causing water loss.