It is not magic in a bottle, it will not help a crappy cooling system, it will not allow you to run Pikes Peak with the A/C on and towing a trailer at 90 mph without overheating. This provides for more even cooling in every cylinder which in turn allows for more precise tuning of the engine. Water has more surface tension than solvent and WW will make the water more "solvent like" if you will. You can see an example of this if you pour a little water on a sheet of glass and then pour a little solvent or gasoline near it on the same sheet of glass, the water will make little droplets and the solvent will spread out into a thin layer. A surfactant like WW lowers surface tension and allow it to break up the bubble and get liquid to the hot area. Hence you get a hot spot in the combustion chamber. Vapor doesn't conduct heat nearly as well as liquid. If it gets hot enough, then a gas bubble forms there because any water that tries to get in vaporizes and forms yet another bubble. What happens near an exhaust valve in the head for example is that the surface of the head in the water passage gets so hot that it causes the water/coolant to boil in that one spot. Water alone has much better thermal transfer properties than water with coolant added but coolant creates higher surface tension and adds viscosity. Water Wetter is not designed to lower temps, only to lower surface tension of the water. There is no product you can dump out of a bottle that will correct design problems (like too small a rad, bad water pump, air locks in systems) etc.The link to the tech review explains it nicely.
![water wetter review water wetter review](https://i.pinimg.com/originals/62/7c/17/627c179c90028ae62cf92f50cb3ac159.jpg)
Water wetter will reduce the potential "hot spots" in an engine where water alone can actually vaporize without some assistance.Īs always, YMMV. I almost forgot! It works even better with a 50/50 mix of water and antifreeze!ĥ. It is considered "legal" for use in race carsĤ. A water wetter product will significantly reduce internal corrosion within all wetted areasģ. With water wetter, there is no appreciable corrosion evident in a couple of years use.ġ.Use of a water wetter product should reduce temperatures within the cooling system, expect between 5 and 8 degrees CĢ. On a 3.8L with a steel shim head gasket, you will see significant corrosion in less than a month with just water. Red Line water wetter has worked great.the best value is honestly the corrosion inhibitors in the product you don't get that in a rinse agent. The result is a reduced heat dissipation capability of our cooling systems. Part of the concern is that glycol-based coolants are banned and water-only is the rule. I have been building and racing since the seventies.and I have used water wetter in all our cars since its introduction. In my experience you should expect a temp drop of between 5 and 8 degrees C.
![water wetter review water wetter review](https://i.ebayimg.com/images/g/NP8AAOSwfaZfhvxS/s-l640.jpg)
The result is a marginal cooling system, at least over here where today the temperature is 37 degrees C! Water wetter used in these cars make the difference between boiling over in traffic or getting home. Water wetter is a great product when used to accomodate the marginal performance of cooling systems.here is an example In an Xk-120/140 the radiator is really too small, too far back from the grill opening and the water pump bypass is too large.
![water wetter review water wetter review](https://i.ebayimg.com/images/g/pVYAAOSwpr9ePNjd/s-l300.jpg)
I own a vintage restoration business and have been racing since the 70's. I have used it for the past 15 years or so. But if the problem is poor flow distribution in the radiator, or it is on the air side of radiator because of lack of airflow/poor air distribution/air too hot, then it is unlikely to have a noticeable effect. If the problem is that the cooling system is simply too small to handle the amount of heat to be rejected, then it may help a little by improving the efficiency of the radiator. So, if the cooling problem is lack of thermal transfer from the engine block to the water or from the water to the inside surfaces of the radiator (usually because contaminated/corroded surfaces or low water flow) then water wetter will help noticeably. Water wetter acts to reduce the bonds which hold this layer together, thus reducing its thickness and allowing better heat transfer. Where the flow is fast and turbulent the boundary layer is extremely thin, but where flow is slow and smooth it becomes thicker and becomes a hindrance to heat transfer. This layer of water moving at reduced speed is called the boundary layer. The speed then rapidly picks up moving away from the surface into the main flow. When water flows though tubes and heat exchangers, friction and attraction between molecules means the water actually touching all the surfaces is virtually stationary. Then there's a better chance of deciding if it's going to help the cooling in a particular situation.
![water wetter review water wetter review](https://www.steeda.com/assets/images/exim/backup/images/802-80204.jpg)
It might be helpful to explain the mechanism by which "water wetter" improves the cooling system.