Mine had less than half when I got it. The dealer told me that they didn't suggest filling it up due to crystallization. I was in a crazy hurry when I picked it up so I wasn't thinking clearly. The manufacturer doesn't suggest the dealer filling them up since they may sit on the lot. It takes DEF around 2 years to crystalize in the mid south. At around 1000 miles I put 5 gal in it. It doesn't show 100%. I filled it until the nozzle shut off.
2014 Jeep CG 3.0L Fiat, 2006 F-250 6.0L FX4, 2003 Dodge 3500 5.9L CRD, 1983 Jeep J-10 5.9L Gas, 1979 International Scout II 345ci