This specification covers several grades of diesel fuel for use in engine development tests and for factory fill in production diesel engines.

Restricted Chemical Substances

All product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification.

APPLICATION

These fuels are intended for use as follows:

Grade 1C Winter Fuel: Factory Fill or Service Accumulation test fuel, for use at low ambient temperatures of -12 to -32°C (+10 to -25°F). For temperatures below -32°C (-25°F), a fuel meeting the requirements of Commercial Item Description (CID) AA-52557, Low Temperature Diesel Fuel Blend F-65 should be used. The Grade 1 diesel fuel is normally provided with a sulfur content of 7-15 parts per million (ppm).

Grade 1C^(MP): Winter fuel used by Engine Group at Advanced Technology Center (ATC)

Grade 2C Summer Fuel: Factory Fill or Service Accumulation test fuel for normal ambient temperature operations. This fuel, with or without minimum aromatics content, will meet EPA requirements for Service Accumulation tests. The Grade 2 diesel fuel is normally provided with a sulfur content of 7-15 parts per million (ppm).

Grade 2C^(ATC): The default fuel used by Engine Group at Advanced Technology Center (ATC).

Grade 2 CERT: This fuel will meet EPA requirements for exhaust emission testing. The fuel is available in an ultra-low sulfur version with sulfur content at 8-14 ppm.