I have heard that if your using ethanol gasoline known as E10 there is no need to add a dry gas such as (Isopropyl Alcohol) because the ethanol will absorb any moisture that enters the gas tank. Is this so?
Also, if I need to use a gas drier is it ok to use the cheaper Methyl Alcohol instead of the more expensive Isopropyl Alcohol?
NO! There is even greater need to use a gas drier when using E10 gasoline. The problem with an ethanol gasoline is it can only absorb so much water, up to a content of 0.5 volume percent before it will phase separate. Phase separation occurs When the water reaches the maximum amount that the gasoline blend can dissolve, any additional water will separate from the gasoline. When this happens if you want to remove this additional water you will have to remove this moisture by using a dry gas that contains isopropyl.
The problem with Methyl Alcohol is that it will keep the water in your tank from freezing, but it does nothing in the way of removing the water. The other type Isopropyl(Isopropanol)is the preferred one to use because it will mix with the water which will prevent the freezing and at the same time can move this water through the fuel system to be burned off.
