The Dotsero Southern ordered 30 SD60M locomotives in January 1993. These units were delivered between February and April.
Dotsero Southern SD60M locomotives have seen many rebuilds since their introduction in 1993, most recently being equipped with auto-start in 2021. All units would be repainted into the "Wings" scheme in 2002. Like many other units on the roster, K5LA type horns would be mounted just behind the exaust on the long hood with bells 2 and 4 being reversed. While SD60M locomotives were generally designed to run short hood forward, many local runs would require the DSRR to install ditchlights on both the front and rear of the unit. Ditchlights were not initially added however, only being mounted 3 years after their build date in 1996. Like all other units, these units were given a horizontal Gyra-light on the cab roof and used vertical nose mount headlights. Positive Train Control (PTC) would be installed in 2014 alongside another rebuild program DSRR was putting the SD60Ms through. These PTC antennas would be mounted on the cab top just behind the Gyra-light which was not moved during this addition.
One very noticable change done to units in 2014 was the replacement of their trucks. All SD60M locomotives in the fleet were rebuilt to ride on HTCR style trucks to improve handling at speed.
Unlike most units on the roster, DSRR SD60Ms received rear numberboards rather than the typical absence of numbers on the rear.
Aside from rough handling, the SD60Ms have proved to be reliable, liked units on the DSRR roster. Although, many units have faded paint in modern day.
| Unit Number | Build Date | Last Run | Notes |
|---|---|---|---|
| DSRR 3029 | February 1993 | N/A | N/A |
| DSRR 3030 | February 1993 | N/A | N/A |
| DSRR 3031 | February 1993 | December 20th, 2012 | Unit fire, used for parts. |
| DSRR 3032 | February 1993 | N/A | N/A |
| DSRR 3033 | February 1993 | N/A | N/A |
| DSRR 3034 | February 1993 | N/A | N/A |
| DSRR 3035 | February 1993 | N/A | N/A |
| DSRR 3036 | February 1993 | N/A | N/A |
| DSRR 3037 | February 1993 | N/A | Painted in 2025 for the United State's semiquincentennial. |
| DSRR 3038 | February 1993 | N/A | N/A |
| DSRR 3039 | March 1993 | N/A | N/A |
| DSRR 3040 | March 1993 | N/A | N/A |
| DSRR 3041 | March 1993 | N/A | N/A |
| DSRR 3042 | March 1993 | N/A | N/A |
| DSRR 3043 | March 1993 | N/A | N/A |
| DSRR 3044 | March 1993 | N/A | N/A |
| DSRR 3045 | March 1993 | N/A | N/A |
| DSRR 3046 | March 1993 | N/A | N/A |
| DSRR 3047 | March 1993 | N/A | N/A |
| DSRR 3048 | March 1993 | N/A | N/A |
| DSRR 3049 | March 1993 | N/A | N/A |
| DSRR 3050 | March 1993 | N/A | N/A |
| DSRR 3051 | March 1993 | N/A | N/A |
| DSRR 3052 | March 1993 | N/A | N/A |
| DSRR 3053 | April 1993 | N/A | N/A |
| DSRR 3054 | April 1993 | N/A | N/A |
| DSRR 3055 | April 1993 | March 31st, 2014 | Stored. |
| DSRR 3056 | April 1993 | March 31st, 2014 | Stored. |
| DSRR 3057 | April 1993 | March 31st, 2014 | Stored. |
| DSRR 3058 | April 1993 | March 31st, 2014 | Stored. |
| DSRR 3059 | April 1993 | March 31st, 2014 | Stored. |
DSRR 3030 at Glenwood Springs on Jan 18th, 2024. It's running long hood forward on a local train to Grand Junction, CO.