Heard some very interesting news today, but I can not spill the beans.
Hmmm.:-D
Hrrmmmm.op:
Thanks to this thread I went out and bought 2 of the concentrated bottles last night at walmart. They didnt have the 20oz bottles just the 10. I use shitty walmart gas so it might need a good cleaning.
Auto parts stores tend to carry the 20 oz bottles.