RAM 1500 2020 Owner's Manual page 420

418 TECHNICAL SPECIFICATIONS
CAUTION!
Use of blends greater than 7% is not
approved. Use of blends greater than 7% can
result in engine damage. Such damage is not
covered by the New Vehicle Limited Warranty.
Biodiesel Fuel Properties — Low Ambient
Temperatures
Biodiesel fuel may gel or solidify at low ambient
temperatures, which may pose problems for both
storage and operation. Precautions can be
necessary at low ambient temperatures, such as
storing the fuel in a heated building or a heated
storage tank, or using cold temperature additives.
Fuel Quality — Must Comply With ASTM
Standards
The quality of Biodiesel fuel may vary widely.
Only fuel produced by a BQ9000 supplier to the
following specifications may be blended to
meet Biodiesel blend B6 – B20 fuel meeting
ASTM specification D-7467:
Petrodiesel fuel meeting ASTM specification
D-975 and Biodiesel fuel (B100) meeting ASTM
specification D-6751
Fuel Oxidation Stability — Must Use Fuel
Within Six Months Of Manufacture
Biodiesel fuel has poor oxidation stability which
can result in long term storage problems. Fuel
produced to approved ASTM standards, if
stored properly, provides for protection against
fuel oxidation for up to six months.
Fuel Water Separation — Must Use Mopar
Approved Fuel Filter Elements
Biodiesel fuel has a natural affinity to water and
water accelerates microbial growth. Your Mopar
filtration system is designed to provide
adequate fuel water separation capabilities.
Fuel In Oil Dilution — Must Adhere To
Required Oil Change Interval
Fuel dilution of lubricating oil has been observed
with the use of Biodiesel fuel. Fuel in oil must not
exceed 5%. To ensure this limit is met your oil
change interval must be maintained with in the
suggested schedule. The regular use of biodiesel
between 6% and 7% requires intervals shorter than
the outlined 10,000 miles and must not exceed the
suggested schedule. When routinely operating on
biodiesel between 6% and 7%, oil and filter
replacement intervals must not exceed 8,000 Miles
or 6 months, which ever comes first.
Biodiesel Fuel Filter Change Intervals
The use of biodiesel requires more frequent fuel
filter change intervals. When operating on
biodiesel between 6% and 7%, fuel filter
replacement intervals should be every second
oil change, and must not exceed 16,000 miles
(25,750 km).
NOTE:
Under no circumstances should oil change
intervals exceed 8,000 miles (12,875 km) or
6 months, if regular operation occurs with 6% -
7% biodiesel blends. Under no circumstances
should fuel filter replacement intervals exceed
every second oil change and must not exceed
16,000 miles (25, 750 km), if regular operation
occurs with 6% - 7% biodiesel blends. Failure to
comply with these oil change and fuel filter
requirements for vehicles operating on
biodiesel blends up to B7 may result in prema-
ture engine wear. Such wear is not covered by
the New Vehicle Limited Warranty. The engine
may suffer severe damage if operated with
concentrations of biodiesel higher than 7%.