Just would like to post this up for some folks to see. Might be common knowledge. I used Redline Water Wetter on my last coolant flush. I had always heard good things. Recently (today) I inspected the coolant and found little brown drops floating on the top in the reservoir. I think most people would look at this and think they had oil in their coolant. But oil mixing with flowing coolant usually turns into coffee looking color. After some research on what it may be I found an Evo forum with the thread I was looking for... Looks like oil in the coolant... [MERGED] - evolutionm.net Some good reassurance that noting is wrong. But I do think another flush is in order without the Water Wetter this time around.