Hello all, new user. I tried using baking soda, but the gas made our eyes burn, and I found out it produces some bad gases. I read in here to use lemonade powder, but wouldn't you know it, the store had no Kool Aid at all. Been real hot around here, i guess they sold out. Anyway, got to thinking...bought a bottle of cheap, generic lemon juice, and tried that. I put in about 7-8 cap fulls. Production didn't seem like much when we reset the bubbler, and it really improved on the road! Lots more power, and I was able to lean down the consumption by another 10% or so on city, and 15% on highway. Works great! Anyone know of any drawbacks?