i swapped out my old gear oil for redline synthetic last week and had no idea the trans was so godamn thirsty,and i ordered 4 when i needed 5,so i needed to order 1 more and shipping was like 5,and i noticed if i got another quart of something...shipping would be basicly free,so i got the water wetter also(all from myoilshop.com) i was just wondering if this water wetter stuff actually keeps the temps down noticably the way they advertise,or did i waste my money

 

I've used Watter Wetter in my cars for years now, and it does work. The best results have been in my Vette. The car typically runs hot, but with the additive, it ran 10-20 degrees cooler. Hope it works for you.

 

thanks,i guess its not a bad pick up at all for $6.50

 

i got some and still haven't but it in, my car runs so cool as it is. i can drive for an hour and leave my hand on the engine.

 

I think Water Wetter only helps in overheating condition.
Seriously, your car can not run cooler than what your thermostat sets to.

 

ummm cough*brand new*cough
well mine never has come close to overheating but the needle is a little more than halfway,i figured $6.50 what the hell..maybe i shoulda got the redline power steering fluid?

 

The stuff works, however, when mixed with anti-freeze (which i hope you're doing) it drastically reduces its effectivity. I think its great for ATV's, which is primarily where i use it. In vehicles with a 50/50 mix you won't even notice a difference.

 

No significant diff when run in the Maxima with coolant. I'm running maybe 40% coolant/60% water. Water temp just below half on the gauge no matter the outside temp.

 

Redline "Water Wetter"

Does it really work? I cannot give a conclusive answer to that question. But I like "Water Wetter" and have been using it in all of my cars for many years now. What I can say with conviction is that the person who wrote Redline's Technical Information brochure on "Water Wetter" knew what he or she was talking about. I have a Ph.D. in Heat Transfer and have taken a graduate course in Boiling and Condensation. Based on my training I can say that Redline's explanation of their product makes good scientific sense.

First we must dispel a common misconception: "Water Wetter" is not designed to lower your car's bulk coolant temperature. So if you put it in your E30 M3 hoping to see lower operational coolant temp's, then you will probably be disappointed.

"Water Wetter" is designed to reduce hot spots in your cylinder head. It does this by reducing the build-up of water vapor in any superheated areas. The bad thing about having hot spots in your cylinder head (read combustion chamber) is that they can promote pre-ignition - definitely a bad thing. This harks back to Smokey Yunick's theory of "soft combustion chambers". Any sharp edges in your combustion chamber (around valve seats for example) may tend to get very hot (even red hot) during operation. These areas of the combustion chamber can then form local hot spots in the cooling passages. Thus, even though your bulk coolant temperature is well below its boiling point (i.e. your gauge reads just fine), there may be localized boiling in some regions of the coolant tract.

This localized boiling can cause a layer of water vapor to form over the hot spot. This vapor forms an insulative blanket and prevents heat from leaving this area, thus making the hot spot even worse. But reducing the surface tension of the water makes it easier for vapor bubbles to leave the surface of the cylinder head and allows the bubbles to convect heat away from the area. Something that changes the surface tension of a liquid is called a "surfactant". It does not take very much surfactant to significantly change the surface tension of water. Hence, you do not need to add very much "Water Wetter" in order for it to do its job.

An additional benefit of using "Water Wetter" (in conjunction with 100% water) in your cooling system is that water has an extremely high heat capacity. Thus a gallon of 100% water can carry more heat away from you engine than an equivalent gallon of 50/50 water and coolant. Water also has a high thermal conductivity which increases the convection of heat away from the coolant passage walls and into the free stream of the liquid flowing through the passages.

"Water Wetter" does not increase the boiling point of water. Standard automotive coolant does increase the boiling point of the mixture above that of 100% water. But remembe that if your cooling system is operating properly, it should never get hot enough to boil (I mean BOIL, not just localized boiling). Raising the boiling point of the coolant in passenger cars is primarily a safety measure, so that if the cooling system is over stressed (climbing a hill on a hot day with AC on), it will not boil over. On performance cars the primary duty of the cooling system is to keep the engine in its optimum temperature range. This is best accomplished with 100% water, because its high heat capacity makes it very efficient at transferring heat.

Performance cars often run relatively high cooling system pressures. This also raises the boiling point of the coolant. But the high system pressure is not used to avoid boiling so much as to allow the engine to operate at a higher temperature for reasons of efficiency. A higher cooling system bulk temperature also allows the use of a smaller radiator (there is a greater driving force to transfer heat from the coolant to the free stream air). Take a look at the E30 M3's "tiny" radiator and you will see what I mean.