Ya know Les, now that I think about it, it would be impossible to detect a difference in engine temp, as the temp guage is what they call an idiot guage. I know the newer Bimmers have this, I think the E36 does too, where you basically have cool, normal, and increasing temp past normal. The needle isn't very accurate, as it won't really indicate anything in between cool and warm, only warm and warmer.
Great find MrM3, that's a decent article. Regardless of it's effectiveness it's either good or doesn't help, I doubt it has any adverse affects. BMW's coolant requirements are fussy, but I think we're ok here.
Hey I got an idea, I have a bottle of BMW cerified coolant and some Water Wetter in the garage... I'll go have a look...
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