02-20-2019, 08:43 AM
Alcohol is hydroscopic and will attract water and water vapor. However, you then have a alcohol/water compound. This compound will have a lower freezing point than water. You still would need to drain the accumulated alcohol/water compound from the system if it accumulates.
This is the same principle HEET and other water removing fuel additives relied on to get water out of your gas system. The HEET had alcohol which absorbed the water, and lowered the freezing point. The motion of the vehicle would mix the petroleum and alcohol/water phase together thereby allowing the fuel system to suck the alcohol/water out of the system and dispose of it out the tail pipe.
Ethanol fuel blends do the same thing, thereby making HEET and similar products obsolete with ethanol fuel blends.
This is the same principle HEET and other water removing fuel additives relied on to get water out of your gas system. The HEET had alcohol which absorbed the water, and lowered the freezing point. The motion of the vehicle would mix the petroleum and alcohol/water phase together thereby allowing the fuel system to suck the alcohol/water out of the system and dispose of it out the tail pipe.
Ethanol fuel blends do the same thing, thereby making HEET and similar products obsolete with ethanol fuel blends.