dirtybird, that is one way to solve it, that's why I stick with new. Mr. Lee's article appeared in the July 2015 issue of Model Airplane News. $10.00 a gallon is better than $20-$30 for glow fuel but way worse than $3.29 gal. for pump gas. He claims the octane is not important in small bore engines. I've heard that elsewhere from our local folks and also have read it in other publications from other authors. Just interested in opinions.