Ram Trucks 2015 3500 - CNG Supplement - Manual (Page 72)

STARTING PROCEDURES
Your vehicle uses the same starting procedures as de-
scribed in the Dodge Ram 1500/2500/3500 Owner’s
Manual. No special starting instructions are required.
NOTE:
Periodically the vehicle will automatically switch
from operation on CNG to Gasoline for a short duration,
depending on conditions. This is done for a number of
reasons, including to maintain the freshness and appro-
priate seasonal blend of gasoline, to ensure maintenance
of the gasoline injectors and/or to meet high-load de-
mands.
FUEL REQUIREMENTS
United States
Use only natural gas which meets the requirements for
gas quality as specified in National Fire Protection Asso-
ciation NFPA52 and American National Standard ANSI/
AGA NGV2. Use of natural gas that does not meet these
requirements may result in starting and driveability
problems and damage to critical fuel system components.
Canada
Use only natural gas which meets the requirements for
gas quality as specified in Canadian Standards Associa-
tion (CSA) B51–M1991 G4.1.2 or SAE J1616. Use of
natural gas that does not meet these requirements may
result in starting and driveability problems and damage
to critical fuel system components.
70 STARTING AND OPERATING