Post #18
jamiek_uk2000 wrote:Well I assumed (probably incorrectly) if you are running this in the car and it has a boiling point then the car isn't overheating because it is the water that is overheating in the car? The metal engine, gaskets and motor oil are all designed to much higher temps so it isn't overheating it is just running hot. Since the water isn't boiling there is nothing putting extra pressure on the system so shouldn't blow anything either?
If the coolant is running hotter, then the hotspots they babble on about within the engine are running hotter, potentially leading to pre-ignition, plug failure, bearing failure because the oil will be taking so much more heat away, etc, etc.
Also, the pressure in the cooling system is sweet naff all even when boiling compared to internal pressures and oil pressure, etc. The only reason it looks so bad when you spring a leak is because once the pressure escapes the boiling point of the coolant drops and it all rapidly boils off, and with the expansion rate of steam compared the volume of water, it looks like massive amounts of pressure. It's not.
And of course, the problem there is, it's the leak that sets it off in the first place, not vice versa.
If you have a massively overkill cooling system and it's for a mueseum piece so you don't have to worry about coolant changes/corrosion, maybe you'd do it (Or just stick damn near straight antifreeze in) But otherwise. No.
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jamiek_uk2000
Posted 15th Jan 2013 at 23:38
