IF a given fuel additive is not mineral spirits it's probably isopropyl alcohol. if it promises miracles it's probably a blend of the two with a touch of chlorinated hydrocarbon solvent. I just specify additive, no matter what it claims to do. O2 cleaner, fuel system cleaner, Octane Booster and engine decarb can all be the same stuff... IPA.... start looking up MSDS sheets...
I remember The RoadWarrior..To understand who he was, you have to go back to another time..the world was powered by the black fuel & the desert sprouted great cities..Gone now, swept away..two mighty warrior tribes went to war & touched off a blaze which engulfed them all. Without fuel, they were nothing..thundering machines sputtered & stopped..Only those mobile enough to scavenge, brutal enough to pillage would survive. The gangs took over the highways, ready to wage war for a tank of juice
Is the point of 'Hypermiling' to be able to say you did it?
Do you not consider the cost of what you do and the return on your investment?
Where is scientific evidence that 'high octane' for a few tanks will actually 'clean' an engine? It does not properly combust in an engine designed and tuned for regular gasoline, so you are in fact, burning money you might better use elsewhere.
What it helps to clean out is Your Wallet. If Your engine needs cleaning [Carbon], I just crank the engine and speed it up just a little and pour a little water down the carb. You can tell if You're pouring too much water when the engine starts to throttle down. I usually put about a pint of H2O before I'm through. This is known as steam cleaning. WaLa