This weekend I ran some Techron fuel injector cleaner through my C14 for the first time ever. Used most of the tank up on the visit to/from Mom. They certainly don't make it easy for motorcyclists to figure out how much liquid to pour out of black bottle with no window, designed for 15 to 18 gal tanks, into a 6 gal tank, while wearing full gear at a windy gas station... Maybe I got it right (was trying to guess by approx weight, 1/3rd of a bottle), maybe I didn't. Maybe it doesn't matter, anyway.