I'll have to admit that I tend toward a "minimalist" attitude regarding the various "mouse milk" solutions to alleged cooling system inadequacies. For one thing I never know how these concoctions will interact with the antifreeze/coolant chemistry. I'm not saying these products are harmful, or even worthless, simply because I don't really know one way or the other. I am saying that I've never felt the need to "improve" on my various cars' cooling system efficiency as long as the cooling system has been properly maintained and regularly serviced. I live in inland southern California, so I'm no stranger to above average summer temperatures or use of the AC (which has one setting in my car from mid-June through mid-September - "freeze-my-butt-off-full-blast").
