Originally Posted By: 09_GXP
Originally Posted By: AZjeff
Water Wetter is a surfactant, in theory it should promote a better liquid/metal interface. We ran it in a circle track stock car running 100% water and a flow restrictor instead of a thermostat and it did lower max running temp. Not sure how it can be measured in a car with a thermostat as it would just stay closed until it reaches temp. Maybe under heavy load conditions it would slow the temp rise and/or lower max temp.
How did it impact the maximum metal temperature or the cylinder block and head? That's what is really important not necessarily the coolant temp.
Unless you have thermocouples in your engine block and head you'll never know. So the next best thing are oil and coolant temps. Considering that WW is a fluid more similar to water than glycol, one would have to say that cylinder temps would be lower using WW. I used a 90% water, 10% glycol, and WW mix in my '68 GTX years back. I tried literally everything in that engine bay over a 3 yr period short of rebuilding the engine to get it to run cooler from June-September....literally a list of 30 or more items including Infra Red gun to a new stock cam and all new cooling system components. The only thing that helped was the water/WW mix....and using 104 octane gas helped as well. The engine probably only had 10K-30K miles on it when I owned it. WW helped me get through several hot summers.