The theory behind the stuff is valid. It just breaks the surface tension,
like soap does. Water likes to bead up, limiting surface contact, with
soap (or this stuff) it flows all over the surface, disipating the heat
quickly. You can try it on a counter top and watch the water bead
promptly collapse.
But if you're cooling system doesn't promote cavitation in the
radiator passages, you'll see no benefit because you've already
got excellent contact between the water and the metal of the
radiator. Hence, some cars see great benefits, some don't.
The water only part is because ethylene glycol is slightly worse
at heat transfer then straight water. Propylene glycol is actually
slightly better then water I think.
If Water Wetter didn't do anything for your vehicle, then this stuff
isn't either. It's essentially the same stuff with a different label.
Cherry kool-aid vs grape kool-aid.
The language of their advertisement concerns me though.
I sincerely hope they don't expect you to run around on a
mere quart of liquid in the cooling system like you typed.
The high pressure cap and low temperature thermostats
are both masking bandaids, and could give the illusion of
a cure all by themselves.
Japanese cars use high efficiency radiators. It takes just
the merest touch of slime to start causing them to overheat
because of inhibited heat transfer. How's your radiator?
Water pumps cavitate, some more then others. How's
your water pump? Especially hooked up to a non-oem
cooling system. Spitfires are hyper sensitive to air flow
through the radiator, how well is the air getting through
yours?
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