For heavy-duty, long-drain service in modern high-efficiency railroad diesel engines, LE’s Ultra RDE Oil was designed to protect silver alloy bearings from wear and contamination. In addition to increasing the engine lifespan, Ultra RDE Oil improves fuel efficiency, reduces wear and provides a high degree of engine protection. It is formulated with highly refined select base oils and exceeds the standards of EMD railroad engines, GE railroad diesel engines, Bombardier railroad diesel engine, Caterpillar diesel engines, Generation IV and API CD.