Originally Posted by gpack
In addition to oxy/pbw, if you happen to get a soda keg with root beer in it; clean it extra well and replace all the rubber parts coming in contact with beer. It will have an impression on the beer fo sho.
I had two with 5 gallons of diet Pepsi, one w/ 5G Pepsi, a couple tonics, and one with a gallon of whatever lemon/lime type soda it happened to be. The others were empty but dirty. All were pressurized. Dumping out that much soda into the bath tub was pretty gross. I definitely prefer beer to soda.