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Don't think that there's any correlation between the oil drops and Water Wetter but can't prove that either. There's no OIL in WW, so it shouldn't produce oil drops in the antifreeze/water.
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Maybe WW striped all the oil residues in the system and pushed them out to the top.

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Also your leak (if it was a leak) is now fixed. I would recommend that you not leave it in your system too much longer; IE flush and change the oil and filter.
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Yes, in about another two weeks. We do ot put many miles on that car anymore (after we get the diesel). It has about 2500 miles in about 6 months now.

Mine was under-dozed and I belive yours was a bit over-dozed.