You could use a fuel stabilizer, like STA-BIL[1]. They are commonly used when storing gasoline for long periods. [1] http://www.goldeagle.com/brands/stabil/ h

You could use a fuel stabilizer, like STA-BIL[1]. They are commonly used when storing gasoline for long periods. [1] http://www.goldeagle.com/brands/stabil/ http://www.goldeagle.com/brands/stabil/