Boosted or normally aspirated? Thanks for the input. I am pretty sure I will continue to use street premium but in a pinch I'm going to need an alternative

NA 572s. I'm a lake boater so I can usually fill up with 93 but we spend a few weeks in Florida each winter and fill up at the marinas so that's when I use it.

Yes, Comrade.

Those things are garbage and not calibrated for ethanol. ( I bet all it reads is 110)
but you should definitely call Boostane and tell em their chart is wrong based on a russian garbage octane tester .

I've never used it myself, but have a friend that swears by it. His blower engine was setting off the knock sensor and pulling timing. I believe his sweet spot is 93 octane and he had filled up with 91. Added the right amount of Boostane all good.
And it is by the point not by the tenth point, I've researched that too.

I have used the Boostane. It works as advertised. the parts store octane boosters are 1/10th of a point, but not the boostane.

Grazie

Thanks! I appreciate the inputs from EVERYONE!

Get some toluene. That is what they use at the refinery.__PRESENT

Good point...I would like to hear first person experience about mix ratios and long-term affects of adding toluene to 87 gasoline to make 91-92 octane gas for my big blocks.