Octane additives?

BTW if you use the Torco you can use it with straight pump gas. Doesn't matter if it has alcohol in it or not.
Again convenience to get the product and cost per gallon? And of course performance is always nice.
The 92 non-ethanol is 4.69 a gallon and the backstabbers 108 equals out to about $13.40 a gallon. Which equals out to about $6.43 per gallon at a 4 to 1 mixture. And that's about what the hundred LL goes for. The difference in convenience between the two feels is Worlds Apart. The backstabbers is 15 blocks one way and non-ethanol is 25 blocks the other way 100ll is gas cans only all the way out to the airport.