For most octane boosters, yes. Boostane does actually work though and it's the only product (or one of the only ones) that I'm aware of that is recommended by Whipple.I'm not familiar with Boostane, but most of the octane boosters I've seen did very little to actually boost the octane of a tank, something like 0.1 octane points per ten gallons. Is it actually doing anything worthwhile?
JR
Going to be in a similar situation. Tuned for 93 and only 92 available where im going. Will be mixing boostane with 92. Are you still mixing? Any harm so far?No 93 octane where I live and I have been mixing boostane with 91 to make 93. Are there any long term negative effects using it in every tank that I should worry about?