This from Bill Friedrich:
The City of Rockford had issues with apparatus breaking down due to age so they started purchasing used apparatus. One from Naperville, two from Elmhurst and one from St.Charles. There are no plans to repaint these vehicles to the Rockford FD color scheme.

Rockford Fire Department Engine 6 is X-Naperville Engine 2 (311). A 1991 EONE Hush 1500/1000. Bill Friedrich photo

Rockford Engine 15 is a 1990 Spartan Monarch/Darley 1500/500 which is X-Elmhurst Engine 1. Bill Friedrich photo
#1 by Evan Davis on December 19, 2016 - 3:57 PM
Is Rockford Engine 15 (the old Elmhurst Engine 2) still running with the dept?
#2 by Bill Friedrich on November 7, 2012 - 1:46 PM
Thanks for the updated info.
#3 by Ryan on November 7, 2012 - 1:04 PM
The picture of Rockford Engine 15 is actually Elmhurst Engine 2, which was either a 1991 or 1992. There are significant differences between the two, and I’m very familiar with them.