Our Customers Fleet operations and maintenance professionals familiar and comfortable with the existing diesel platform will find the transition to the ESI Phoenix NG 7.6L an easy one as there are no special tools or extensive training requirements. Under ESI’s unique engine exchange program, the older existing diesel engine is replaced with a new OEM ESI Phoenix NG 7.6L, which has an identical footprint. ESI’s program includes fuel storage system installation (CNG or LNG), engine commissioning, a two (2) year parts and labor warranty and a full complement of optional maintenance services. As an example, ESI provides the perfect solution in the following niche markets: School buses Public Transportation Refuse/waste management Food/beverage distribution Utilities Delivery Services Stationary engines (Gensets, well head sites, irrigational pivots)