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Fred,
I don't know what all the phosphate-fuss is, but I remember this thread a
couple of years ago. The answer must be in a FAQ somewhere, but I
haven't perused them lately. I just use phosphate-free antifreeze, and
continue on in the "ignorance is bliss" mode. Perhaps some chemist out
there could enlighten us? As to water wetter, I use it in my 2002, and
it seems to lower the engine temp slightly, but not 30 degrees! I think
it helps a little, and doesn't hurt, so I drop it in.
Ian
'76 M2002
'88 535is