Cold Weather Gas Tank Additive

PopS wrote:
We will be going into Colorado late Dec and staying till May. we will be parked in a RV Park from Jan to March

In the movie "No country for old men" the girl was worried that she couldn't pay her bills. The Hit Man responded: "I wouldn't worry about it" (since she was unlikely to live).

I wouldn't worry about additive, as Colorado cold will likely kill you. Seriously, do some research on cold weather camping before you commit to Colo!