I have been planning to run some sea foam in the gas tank of the ZL 900, so today I got around to it. The bike has not been running like it should.,due to it sitting most of the time. Rode this afternoon with a friend to our Monday night get together for coffee and meeting. Riding on the freeway in traffic, I felt the carbs working a little better . On the way home, I was able to get up to hold 8000 revs in 6th gear, as to really try and clear its throat. The result was that I was able to get the bike back up to running the way it was before all the time sitting. This Sea Foam really works pretty good, you just have to give the bike a good workout to get results. At some point, Im going to send the carbs out to a ZL carb rebuilder.and have him do a complete overhaul on them , including making sure Im jetted properly. This should really improve the bikes over all performance...But for now, Im happy.