110 leaded

[HighwayUFO]

just a little Q. In idaho you can get 110 octane trick racing fuel from the pumps. I read that the minimum an SVX should use in 91 octane. Is it kosher to run one gallon of trick in a full tank of 91 or 93 octane?
I did just a squirt some time ago, not more than .082 of a gallon. and it didn't seem to hurt the car. There wasn't that much race fuel in the tank but it seemed like it actually did help somewhat.
let me know if it is cool to mix 91 and trick race gas.