Thus in practice it has little value to anything we’re doing. Nor does it matter unless you exceed the boiling point of water+coolant. And while that’s true of radiator efficiency it reduces thermal transfer rate in the engine, so… The greater the difference between coolant media (lets say water) and the ambient temperature (lets say of air) the greater the thermal transfer rate. The boiling point of water goes up, and this allows a higher coolant temperature. Yes, higher pressure increases cooling efficiency. In turn one can run more timing or less octane as a lower CHT results in less knock. Water temperature exiting the block should remain unchanged!! but block temperature will go down, as should oil temperature. This “should” bring the thermostat open more and water flow will increase to match. If you see a lower CHT temperature (of the head, not the water), you’ve confirmed you are transferring more heat from the head into the water. If you see a lower (and you will) value at rad exit you’ve confirmed increased thermal transfer at the radiator. There are only two test points that matter: Coolant temperature at the radiator exit, and cylinder head block temperature. Ergo that part of the test is not only flawed, (if it captured any data), it captured the wrong data too. If you get a different temperature leaving the engine your test is bad, the thermostat won’t allow that. All well and good, and that part of the test is valid. Now since thermal transfer increases at the radiator too, if one looks at coolant temperature exiting the radiator it will have dropped as a result of the radiator efficiency increase. The water temperature in the engine remains controlled by the thermostat. Why? Because the job is to increase the removal of heat from the engine block and more efficiently transfer it to the water. You may see this as a reduction in coolant temperature, but measuring same is a poor indicator. A surfactant increases the thermal transfer rate of water. The test results, while not invalid per say, aren’t really indicative enough. I happen to prefer Rislone’s Hyper-Cool, which is really Hyper-lube’s product, but now I can buy it at Walmart. They have a newer variant they can recommend that is actually for diesel use. If you call Redline they will acknowledge same. Water Wetter does have a rep for sludging. This is with and without water wetter, so its not something else in the engine that was caused by hitting those temps This happened when the car was about a year old had under 5k miles on it, so its not an old car thing.Ĭould high temps cause this? the car did get to the low 240’s water temp on the track before backing off. There was no sludge before, he drained in and put in fresh coolant/distilled water at a 25/75 mix plus water wetter, did a track day, got the sludge, drained and flushed a couple times to get all the sludge out, and went back to a 30/70 mix with no water wetter and the sludge never came back. Googling it brings up tons of results so its not a one off thing…Īs far as the brown sludge being caused by something else, thats definitely not the case here. Red Line says its coolant can reduce operating temperatures by up to 20 ̊F and prolong the life of the entire cooling Is too much water wetter something that causes the brown sludge? I can’t say for a fact he followed directions, but he’s the type of guy to follow I know it works for a lot of people, but it also ends in brown sludge for a lot of people. Red Line’s proprietary Water Wetter coolant additive formula enhances the fluid’s ability to transfer heat. Keeping new components like new for 5 years/150,000 miles and prevents further damage to older components. Using the pre mixed SuperCool protects the entire cooling system. Red Line Supercool fortified with Water Wetter is designed to maximize the performance of the cooling system with superior protection against cavitation and corrosion/erosion. This is useful in very cold climates or for cars that are stored where you might want a higher concentration of coolant to water. Red Line Supercool comes in two variants, one that is 50/50 pre blended and ready to use, and a concentrated version where you can control the ratio of coolant to water. Red Line has released a new high performance coolant that has its famous, and universally used in motorsports, Water Wetter surfactant additive pre blended in. Testing Red Line’s New SuperCool Coolant & CSF’s Tundra Radiator
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