D-A Railroad Engine Oil SAE 20W-40

D-A RREO 7™ SAE 20W-40 is designed to meet the stringent performance requirements of new / remanufactured Tier 4 locomotives utilizing ULSD (ultra-low sulfur diesel) and operating under more severe conditions with less oil consumption and lower emissions. It offers reduced SAPS (sulfated ash, phosphorous and sulfur), advanced detergency and dispersancy technology and increased yellow metal and anti-wear protection critical to satisfactory operation and long component life of exhaust after treatment devices (particulate filters and oxidation catalysts). In addition, it affords enhanced alkalinity (TBN) retention and oil consumption reduction characteristics.


Additional information

SAE 20W-40

Viscosity profiles meet the full requirements for protection and performance. Always consult your owner’s manual for proper oil viscosity and quality selection guidance.

Packaging Options

Available in a wide range of packaging including:
Part Number Packaging
51261 Bulk
51262 54 Gallon Drum
51263 329 Gallon Tote

Approvals and Specifications

Locomotive Maintenance Officers Assoc. (LMOA) Generation 7

OEM Approvals: Progress Rail Internal Listing, General Electric LMOA Generation 7 including Tier IV emission levels

D-A RREO 7™ SAE 20W-40 supports the performance requirements for medium speed twocycle and four-cycle diesel engines, including:

• Detroit Diesel
• Fairbanks Morse