Trucks: B-B (Heavyweight Swing Bolster)
Engine: 12-251C, 1,800 hp
Gear ratio: 62:21
Maximum speed: 92 mph
Operating weight (lbs.): 255,000, Nos. 3151, 3153 239,000 after electrical generator removed
Tractive effort (lbs.): 38,000
Dyanamic brake: No
Length: 56′ – 11 3/4″
Converted from 3800-series RS-18s to power Tempo passenger trains on routes west of Toronto, ON to Windsor and Sarnia.
| Road no. | Class | Build date | Builder’s no. | Original no. | Retired | Notes / dispostion |
| 3150 | MRE-18g | Jan 60 | 83230 | 3850 | Jun 22 83 | |
| 3151 | MRE-18g | Apr 60 | 83263 | 3883 | Jun 22 83 | Subclass MR-18g after electrical generator removed in 1970 |
| 3152 | MRE-18g | Feb 60 | 83236 | 3856 | Jun 22 83 | |
| 3153 | MRE-18g | Feb 60 | 83240 | 3860 | Jun 22 83 | Subclass MR-18g after electrical generator removed in 1970 |
| 3154 | MRE-18g | Apr 60 | 83264 | 3884 | Jun 22 83 | |
| 3155 | MRE-18g | Jun 60 | 83267 | 3887 | Jun 22 83 |