Water Wetter. Does it actually work?
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Rotary Enthusiast
Joined: Apr 2004
Posts: 836
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From: Daytona Beach FL
I saw the water gauge actually move on my old 87 turboII when i put it in.I use it now in my fd .another member on this forum nietto,(single turbo) just tried it and is happy with it since his temps have gone down.
Rotary Enthusiast
Joined: Mar 2001
Posts: 1,283
Likes: 4
From: ATL, GA U.S.
This is one of those products that creates so much misconception on what it does.
The only thing that water wetter does is to change the surface tension of water period. If you do not know what that means, look up the word meniscus in the dictionary or high school chemistry book.
By altering (lowering) the surface tension of water it effectlively creates better surface contact, therefor better heat transfer (less hot spots). This in effect removes more heat from the metal and lowers the overall temperature of the engine.
The temperature you are reading is the temperature of the coolant/water/water wetter, not the engine block (all temp sensors are reading water temp, very very few temp readings are actually from the engine block). That is why you do not see any temperature changes. Read the claim very carefully, the claimed temperature change is of the engine, not your coolant.
The only thing that water wetter does is to change the surface tension of water period. If you do not know what that means, look up the word meniscus in the dictionary or high school chemistry book.
By altering (lowering) the surface tension of water it effectlively creates better surface contact, therefor better heat transfer (less hot spots). This in effect removes more heat from the metal and lowers the overall temperature of the engine.
The temperature you are reading is the temperature of the coolant/water/water wetter, not the engine block (all temp sensors are reading water temp, very very few temp readings are actually from the engine block). That is why you do not see any temperature changes. Read the claim very carefully, the claimed temperature change is of the engine, not your coolant.
Trexthe3rd is correct. It is made to help increase heat flow from the engine to the water. It protects the engine.
Even so:
You can not test something like this at normal driving conditions with a well operating cooling system. If it does make a difference it will be when the cooling system maxes out.
The same thing applies to EVANS coolant. It will not make much or any difference under normal driving conditions.
Both are made for when the cooling system is under very heavy loads.
The Water Wetter might also cool a little better due to the less surface tension allowing better heat flow from the coolant to the radiator but only under max system usage.
Even so:
You can not test something like this at normal driving conditions with a well operating cooling system. If it does make a difference it will be when the cooling system maxes out.
The same thing applies to EVANS coolant. It will not make much or any difference under normal driving conditions.
Both are made for when the cooling system is under very heavy loads.
The Water Wetter might also cool a little better due to the less surface tension allowing better heat flow from the coolant to the radiator but only under max system usage.
Last edited by cewrx7r1; Jul 11, 2005 at 05:57 PM.
Originally Posted by Trexthe3rd
This is one of those products that creates so much misconception on what it does.
The only thing that water wetter does is to change the surface tension of water period. If you do not know what that means, look up the word meniscus in the dictionary or high school chemistry book.
By altering (lowering) the surface tension of water it effectlively creates better surface contact, therefor better heat transfer (less hot spots). This in effect removes more heat from the metal and lowers the overall temperature of the engine.
The temperature you are reading is the temperature of the coolant/water/water wetter, not the engine block (all temp sensors are reading water temp, very very few temp readings are actually from the engine block). That is why you do not see any temperature changes. Read the claim very carefully, the claimed temperature change is of the engine, not your coolant.
The only thing that water wetter does is to change the surface tension of water period. If you do not know what that means, look up the word meniscus in the dictionary or high school chemistry book.
By altering (lowering) the surface tension of water it effectlively creates better surface contact, therefor better heat transfer (less hot spots). This in effect removes more heat from the metal and lowers the overall temperature of the engine.
The temperature you are reading is the temperature of the coolant/water/water wetter, not the engine block (all temp sensors are reading water temp, very very few temp readings are actually from the engine block). That is why you do not see any temperature changes. Read the claim very carefully, the claimed temperature change is of the engine, not your coolant.
Exactly, that is why the first thing I did to my FD was drain, flush and refill my coolant and add a bottle of water wetter.
You don't want boiling pockets at the hottest spots inside your engine.
The next step up would be to run EVANS npg coolant found at RotaryPerformance, Rx7store.com, and many other RX-7 only and road racing stores.
I plan on running Evans next and even keeping my bone stock cooling system stock.
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