Anti-freeze as it's actually known is really only required if using vehicles in sub zero weather conditions. The major benefit of anti-freeze are the anti-corrosive properties contained which you can get as an additive to use with water. My L67 runs fine on water and has done so for many years. Never over heats which according to your earlier statements should occur....
If I was living in a location where where sub-zero temperatures was normal I would indeed use it.
Having said all that it doesn't change the fact that as a cooling medium water is better than any water/glycol mix. This is fact, also I would once again recommend you do some research on boiling point/pressure and what effects this has on the cooling system in your car but I'll give you a big hint, pressure effects the boiling point much more than adding glycol mixtures!
Tbh, it really doesn't bother me what you do with your car but before you continue to spread internet myths about vehicle cooling systems please check your facts.
Just adding water to a car's cooling system will NOT cause it to overheat.
Seems your trying to create a superiority issue rather than provided a General Discusion Forum.
The application of pure water does lower the boiling temp.
This is some fact.
Does water conduct heat better than water glycol mix.
Water will transfer heat better than a combination of glycol and water.
Transfer meaning?
Transfer the heat around the radiator to be cooled.
So the benifit of a glycol mix?
Anti freeze and anti boil properties.
Water will freeze at 0c and boil at 100c, a glycol based coolant will freeze at -18c and boil at 104c when mixed at 33%.
A mixture reduces water vapourization compared to without because a glycol based mixture will not boil and therefor not steam.
A plain water mix will transfer heat better and therefor keep the vehicle cooler. If it gets to 100c it will boil unlike a gylcol based coolant so a mix controls/manages heat more effective to a higher temp as glycol based coolant can handle higher temperatures.
Does it evaporate or increase pressure as a mix compared to water.
It will evaporate eventually when it gets hot enough, but it will evaporate slower than water.
Number one you should never use only water, that will leave you with no protection against scale, corrosion & oxidation.
If something does manage to fail in the system the gylcol will take slightly higher temps and would avoid boiling unlike the plain water. Plus if you did happen to see -1c or lower which can happen in parts of Australia/Tas etc in winter a glycol mix would avoid any freezing damage upon cold start.
You could potentially test it yourself if you had a coolant temperature sensor, I doubt you'd see more than a degree or two difference between a 33-50% gylcol mix to straight water.
But then you will eliminate the boil at say 100c(water), also it vaporizing leaving a hot air pocket that will enevetably cause damage not cooling a affected area trapped with stem/air.
If water boils it vapourizes, evaporates leaving a hot air pocket not cooling. Water boils at 100c, and radiator if operating correctly should not get to 100c.
If a hot pocket was trapped within the engine block it would not cool as a result creating a higher temp due to Water boiling at a lower temp.
Boiling water vapourizing and evapouration of the total water amount is reduced over any duration allowing air to form within the entire system reducing circulation leading to a hot pocket that can cause a heat sink. Not everone tops up the radiater.
A sealed radiator without any leaks should not need to be topped up regularly unless it boils for eg:
A radiator should not get to 100c to boil unless there is a failure in the system in that case a failure is likely to increase the temperature to above 104c which a gylcol coolant would handle.
The benifits out way water in my opinion and I'll stick with the manufacturer recomendations.