Gas additives or not

Now that gas contain 10% ethenol is it necessary to add a dry gas during cold weather?

No.

No.

No.

Not.

You never did need to add it every time.

No, that 10% will absorb any and all condenstaion you may have in your tank!

It’s not necessary. As stated, the 10% ethanol is enough to stop water molecules from associating with each other and creating ice crystals.