Octane additives?

I think I'll start with buying a 5-gallon can of the 108 at backstabbers and mixed 1 gallon per 4 gallons of 92 non ethanol? Then I can carry a couple little one gallon cans of 108 for mixing with four gallons on the road?
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this ratio only comes out to 95.1 where I went to school. I `m not sure I`d run it in 2 stroke motors, but B 12 chemtool carb. and f. inj. cleaner has 5/6 octane boosters in it, matter of fact , everything in it is. Buy a can and read the label. I have been using it ever since Torco went out of site on the price, (years!). The B 12 , when mixed , smells like the gas we can buy at the dragstrip. Trial and error on how much to mix. I have run a full can to a full 18 gal. tank and had had good results. Check it it out !