[Ronbo]

It may seem insignificant, but as Ernie states even a small area of steam is in fact very compressed because of system pressure, in the case of a leak it will displace it's uncompressed volume of water from the system.

Sorry folks, but some of these points like the "pile of money" are, well, BS.

Lets see $100 on the Evens (A pittance compared to the amount of $$ I have in my engine BTW) vs. what? 3 or 4 coolant changes at $?? The difference that ERA seems so upset about just got a lot smaller.

God forbid I mention the effects water has on your block, pump, and radiator.

Worst off is the "it was good enough back in '65" tired-azzed comment, Yep, so was half a can of Copenhagen in the radiator to try to plug the leaks up. Sorry, things have changed since then.

The radiator / fan is a legitimate concern, the Evens stuff will be tougher to cool off because of the thermal efficiency difference from water. The engine side will be a different matter since the reduction of flash boiling in the cylinder head passages and cylinder walls will be reduced. This gives Evens an advantage over water so at worst they'd even out performance wise.

The automotive mfgs will not incur any cost above what's needed to get the vehicle through it's warrenty period. Case in point; since the Fed mandated covering emission systems to 50k miles the auto mfgs had no choice but to use SS exhaust systems. However all of them have re-formulated coolant with the widespread use of aluminum in both engine components and radiators because "ol green" wasn't up to the job.

The reason GM or Ford or any other large-scale mfg doesn't use technology is simple: One penny off production costs equals one dollar in the all the VP's, CEO and board member's pocket. Kinda like "If it ain't broke, don't fix it", these guy's motto is "If no one knows any better, use the cheaper stuff".

Nobody wants to follow Edison's example of building stuff that still works 100yrs later.