Dodge 2015 RAM Owner's Manual page 120

118 MAINTAINING YOUR VEHICLE
Component Fluid, Lubricant, or Genuine Part
Fuel Selection Use good quality diesel fuel from a reputable supplier in your vehicle. Federal law requires
that you must fuel this vehicle with Ultra Low Sulfur Highway Diesel fuel (15 ppm Sulfur
maximum) and prohibits the use of Low Sulfur Highway Diesel fuel (500 ppm Sulfur
maximum) to avoid damage to the emissions control system.
For most year-round service, No. 2 diesel fuel meeting ASTM specification D-975 Grade S15
will provide good performance. We recommend you use a blend of up to 5% biodiesel,
meeting ASTM specification D-975 with your diesel engine.This vehicle is compatible with
biodiesel blends greater than 5% but no greater than 20% biodiesel meeting ASTM
specification D-7467 provided the shortened maintenance intervals are followed as
directed.
Diesel Exhaust Fluid MOPAR® Diesel Exhaust Fluid (API Certified) (DEF) or equivalent that has been API
Certified to the ISO 22241 standard. Use of fluids not API Certified to ISO 22241 may result
in system damage.