Jeep Wrangler 2018-2025 Owners Manual / TECHNICAL SPECIFICATIONS / FUEL REQUIREMENTS – DIESEL ENGINE / Diesel Fuel Specifications

Jeep Wrangler: FUEL REQUIREMENTS – DIESEL ENGINE / Diesel Fuel Specifications

This diesel engine has been developed to take advantage of the high energy content and generally lower cost No. 2 Ultra Low Sulfur diesel fuel or No. 2 Ultra Low Sulfur climatized diesel fuels.

NOTE:

If you accidentally fill the fuel tank with gasoline on your diesel vehicle, do not start the engine. Damage to the engine and fuel system could occur. Please call an authorized dealer for service.
A maximum blend of 5% biodiesel meeting ASTM specification D-975 may be used with your diesel engine without any adjustments to regular service schedules.
Commercially available fuel additives are not necessary for the proper operation of your diesel engine.
No. 1 Ultra Low Sulfur diesel fuel should only be used where extended arctic conditions (-10°F or -23°C) exist.

FUEL REQUIREMENTS – DIESEL ENGINE

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...

Biodiesel Fuel Requirements

A maximum blend of 5% biodiesel meeting ASTM specification D975 is recommended for use with your diesel engine. If frequent operation with Biodiesel blends that are between 6% and 20% (B6–B20) is desired, the maintenance schedule is subject to shorter intervals...

Other information:

Jeep Wrangler 2018-2025 Owners Manual: Four-Position Transfer Case — If Equipped

Four-Wheel Drive Gear Selector The transfer case provides four mode positions: 2H (2WD High) — Two-Wheel Drive High Range 4H (4WD High) —Four-Wheel Drive High Range N (Neutral) 4L (4WD Low) — Four-Wheel Drive Low Range For additional information on the appropriate use of each transfer case mode position, see the information below: 2WD High Two-Wheel Drive High Range — This range is for normal street and highway driving on dry, hard surfaced roads...

Jeep Wrangler 2018-2025 Owners Manual: Jump Starting Procedure

WARNING! Failure to follow this jump starting procedure could result in personal injury or property damage due to battery explosion. CAUTION! Failure to follow these procedures could result in damage to the charging system of the booster vehicle or the discharged vehicle...

Turn Signals. Lane Change Assist — If Equipped

Turn Signals

Move the multifunction lever up or down to activate the turn signals. The arrows on each side of the instrument cluster flash to show proper operation.