Originally Posted By: LT4 Vette
I used Redline Water Wetter in my 5.0 Mustang and it turned the inside of the overflow tank slimy brown.
I used Water Wetter when it first came out in the pink powder form and had no problems.
When I had my 300ZX TT. I had only the pink powder and several bottles of WW. The pink powder is for people who run straight water. No coolant. It is a rust preventive substance that, usually coolants contain. Then you add several bottles of WW. I still had some rust, a little noticeable. I think that is why
you do not see the pink powder anymore. That pink powder turned brown itself if, shelved too long.