I agree!mk1 wrote:This is one of the most interesting, informative threads I have read in a long time.
Thanks folks.
I usually run water based coolants and haven't looked at any waterless types let alone tried any of them. I run the way I do because I'm often well away from somewhere where I can easily get replacement coolant should I need it and with water based stuff, following a partial or total loss of coolant, there's no problem in running on straight water until I can get more coolant to add back in to the system. I don't know if you can do that with the waterless types.
Though I did read here that this waterless stuff is mostly Glycol and that many of the guys here who tried the waterless found the cars ran hotter. Funny thing is that with the Glycol based coolants that are added to water, most manufacturer's caution against mixing beyond 50 / 50 and most recommend 30 / 70 (30% Glycol) as they advise that going beyond these levels reduces the ability of the coolant to absorb, transfer and the heat.
I've always viewed the Coolant as a Transmission system. It should absorb the heat from the engine block / heat and then Transmit that heat to the Heat Exchanger (Radiator) to dump it in to the Air.
I would also agree that something like Wetter Water will help as it appears to reduce or break down the surface tension of straight water, but I also think Glycol does the same which is why leaks sudden appear after adding the stuff.