TM-9-2815-210-34-2-1 LDS-465-1/LDS-465-2 Multifuel Engine Maintenance Manual Part 1
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TM 9-2815-210-34-2-1 (10) Commercial Gasoline (ASTM where Research Octane Number (RON) is D439) , Leaded, Low-Lead, or Unleaded, known to be above 90 or Antiknock Index (Fuel Note 2) known to be above 86. e. Emergency Fuels. Long operation on the following emergency fuels may cause early clogging of fuel filters and early fouling of fuel injector nozzles. Some emergency fuels may need the addition of diesel fuel for satisfactory performance. (1) Burner Fuel Oil, VV-F-815, Grades FO-1 and FO-2 (Fuel Note 1). Grade 1. DF-1 FUEL NOTE 1 Diesel fuels and burner fuel oils should not be used at temperatures below the following limits; except for VV-F-800, Grades DF-1 and DF-2, which are supplied to regional and seasonal requirements. Temperature -10°F., or seasonal limit in accordance with VV-F-800. 2. DF-2 +32°F., or seasonal limit in accordance with VV-F-800. 3. DF-A No limit 4. 1-D and No. 1 -10°F. 5. 2-D and No. 2 +32°F. 6. NATO Code F-75 +15°F. 7. DF-M +35°F. 8. ND +40°F. 9. Gasoline and Turbine Fuels to which Diesel fuel has been added. -25°F. FUEL NOTE 2 “Antiknock Index” is Motor Octane Number + Research Octane Number and as of the date of publication of this manual, is the “Octane Number” displayed on retail gasoline pumps in CONUS. 1-20. ALTERNATE 11 FUEL CORRECTION PROCEDURES. a. This procedure is used for telling if the addition of diesel fuel is needed for good engine operation with unknown or low octane fuels (gasoline and turbine fuel). 1-16