Quote:
I used it in two vehicles. A 95 Firebird 5.7 and a 92 Ranger 3.0. Both ran a 50-50 mix of anti-freeze. After two years both had a film like sediment in the reservoir, which never came back after a flush and refill. I have heard great things about it in race cars running mostly water, but doubt it should be ran in a street car with a coolant mix. Just my .02
Yep , I wouldn't doubt it did on those two specific vehicles .
And depending on what is in a cooling system at time of application it can put out a lot more , which is one of the reasons I really like the stuff - it has a decent cleaning action . It will remove basically everything that isn't " glued " in that it gets decent exposure to over time .
In your two vehicles listed , there are four common possibles of stuff removed (ie settled in your overflow tank ) that come to mind . You may have seen all four or one , most likely at least two . From your description , it doesn't sound like much total material in any case .( In fact , completely independent of this product , that " sounds " within the realm of normal coolant performance under any number of scenerios ).
1. Any " stopleak type " product ,- self or factory installed .
2. Normal amounts of left behind manufacturing material ( Sometimes you can also have abnormally high amounts as well ) . A relevant example of this occurs with a " sand casted " iron block or head thats new - you will always get a certian amount of residual sand pulled out as it goes through its first 1000 - 5000+ heat cycles .Any surfecant will speed this up and water wetter is no exception .
3. Mineral deposits even from demineralized or deionized water . You will have a lot more of this from tap water .
4. There is a fourth effect that you can experience sometimes . It involves silicated coolants . I'm going to delibrately not type the 10 pages or so required to do justice here . There will be no lose of accuracy in practical terms because of this .
Its perfectly normal with this product to have a slightly higher and faster rate of silicate settling in the overflow tank .
This is mostly determined by the silicate concentration you started with .All an acceptable change in regards to this type of settling means is that the WW is working . In a sense its adjusting your silicate level . There is no bad news here . Save the fluid and clear the tank if you don't like the appearence - I do .
There is more , a lot more , and there are circumstances once you start using WW where its best to keep adding WW every 12MO./15K until you reach your next coolant change out date .