I'm keenly aware of octane boost products. I'm also keenly aware that their claims are very misleading - read the fine print on the bottle next time you're looking at a bottle of it - the big print on the front often says things like "Raises 70L of fuel 3 points!". It's only when you read the fine print on the back will you soon discover that they define a "point" as 0.1 (for the cheap stuff) to 0.3 (for the more expensive stuff) octane per the quantity of gas they quote to treat.If you have a premium fuel bike, don’t be afraid. Go to CTC to get STP octane boost. $6 bottle does 70l of fuel. Can’t believe you don’t know this!
People just assume that "3 points" means it'll take 70L of 87 octane fuel and make it all 90 octane equivalent. Often, that entire bottle may take that 70L of fuel up to 87.3 octane, so you'd actually need about 10 bottles to reach 90 octane in that 70L tank of fuel. That's assuming you're using some of the good stuff - I've seen some of the cheap stuff claim only 0.1 octane per bottle, so you'd actually need 30 bottles.
Do you see the problem?
Even when you're scaling it down to a 20L motorcycle tank, you'd still need about 4 bottles with every fill up to get the 91 minimum octane that most bikes that need premium call for.
On a trip where you're riding thousands of kilometers without a guaranteed access to premium fuel (or an absolute guarantee you can buy it in quantity at every fuel stop) you're potentially needing to carry countless bottles (like, 30 or more) of octane booster with you.
This is the big issue. Beware misleading advertising.