Last year I burned a barrel of 8 year old gas that was treated every year with stabilizer. It had quite the orange tint to the fuel but it burned really smooth. I didn't even mix it with fresh gas but right out of the drum. No problem whatsoever. Now of course I used it in summer. Vaporizing and using it in winter might have been an effort in futility though.
"Christianity began as a personal relationship with Jesus Christ. When it went to Athens, it became a philosophy. When it went to Rome, it became an organization. When it went to Europe, it became a culture. When it came to America, it became a business."