Well what is the right additive then and how much does it cost with each full tank of gas? Curious, I've never used a fuel additives...... I've used the oil, radiator, and power steering fix leaks in the bottle but those don't always work... I am always a little skeptic about those quick fixes in a bottle or power in a bottle... Even the concentrated fuel injector cleaners in bottle I don't think are all that effective but do help..
I don't know enough about the fuel additives to comment on that, so I will take your word for it....