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shadetree
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- Joined
- Sep 9, 2007
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- 84
- Location
- East Texas
- Vehicle Year
- 1994
- Make / Model
- Explorer Sport
- Engine Size
- 4.0
- Transmission
- Automatic
That is a quote from the Evan's website promo. It makes sense to me in that without the addition of water in the mix, you have to alter the cooling system in order to keep the temperatures in a reasonable operating range, bigger radiator, more open flow, etc. Remember, propylene is thicker and flows slower.
The addition of water to glycols acts kind of like a catylist, or activator to change the characteristics of the chemicals and how they work in the system. And water isn't a problem if you use distilled water.
It has been my experience that in many cases, if not most, a removed thermostat will make the engine run cooler than normal, and especially in winter. One exception to this is the early flathead Ford V8's, but they had two water pumps, which caused the proplem. Restricting the flow in these engines would make them operate at normal temps.
Also, in those days, antifreeze wasn't that available, or affordable, and the vehicles ran pure water. Many were not pressurized systems, and the water would boil out requiring frequent filling of the cooling system, a service performed at all service stations in those days.
In some cases, some engines still run too cold in winter, even with a thermostat, and some type of restriction has to be used in front of the radiator. I have never seen an engine run hotter without the thermostat that had a properly maintained cooling system.
shady
The addition of water to glycols acts kind of like a catylist, or activator to change the characteristics of the chemicals and how they work in the system. And water isn't a problem if you use distilled water.
It has been my experience that in many cases, if not most, a removed thermostat will make the engine run cooler than normal, and especially in winter. One exception to this is the early flathead Ford V8's, but they had two water pumps, which caused the proplem. Restricting the flow in these engines would make them operate at normal temps.
Also, in those days, antifreeze wasn't that available, or affordable, and the vehicles ran pure water. Many were not pressurized systems, and the water would boil out requiring frequent filling of the cooling system, a service performed at all service stations in those days.
In some cases, some engines still run too cold in winter, even with a thermostat, and some type of restriction has to be used in front of the radiator. I have never seen an engine run hotter without the thermostat that had a properly maintained cooling system.
shady
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