This was off of a website that specialises in coolant and custom radiators
Can I Mix the Formulas Together? Is it Really that Bad?
You should not mix OAT based formulas with IAT formulas. The result is typically turning your coolant into sludge due to a chemical reaction. Keep in mind, OAT based formulas are still a developing technology. There are some “universal” formulas that claim compatibility with other IAT and OAT formulas, but the only safe bet is to use the same formula that is already in your vehicle. This may change as the OAT based formulas continue to develop; however, always err on the side of caution and use the same type of formula that the manufacturer recommends.
So if your topping up your coolant you need to use the same as what's in the vehicle plus when it comes to oxygenated water? I am a mechanical technician for a water company and all water is oxygenated hence h20 one atom of oxygen to 2 atoms of hydrogen. Due to water in the coolant system is pressurised so the coolant water won't boil unless you remove the cap and release the pressure the only way the water can be oxygen free or depleted is by a rapid phase transition ie splitting the oxygen and hydrogen which then you will only have gas in the system. I will admit why change coolant if not necessary but corrosion will always happen in radiators etc (very very slowly) I wouldn't bother changing coolant unless it was dirty which will point out either rust, Radweld in the system etc plus coolant will need to be topped up at some point in every engine ie leaks loss of water through the pressure cap etc.
The second shouted paragraph initially seems to misunderstand what "oxygenated water" means, and then gets quite a lot worse.
The stuff about the formulas might be true though.
I've got green stuff in my Daihatsu, which I should probably replace, but I don't know what it is.
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