American Petroleum Institute (API) Engine Oil Identification Symbol

Jeep Wrangler / Jeep Wrangler Owner's Manual / Maintaining Your Vehicle / Maintenance Procedures / Engine Oil / American Petroleum Institute (API) Engine Oil Identification Symbol

This symbol means that the oil has been certified by the American Petroleum Institute

This symbol means that the oil has been certified by the American Petroleum Institute (API). The manufacturer only recommends API Certified engine oils.

CAUTION!
Do not use chemical flushes in your engine oil as the chemicals can damage your engine. Such damage is not covered by the New Vehicle Limited Warranty.

    See also:

    Fuel Requirements
    All engines are designed to meet all emissions regulations and provide excellent fuel economy and performance when using high quality unleaded “regular” gasoline having an octane rating ...

    Fluid And Filter Changes
    Refer to the “Maintenance Schedule” for the proper maintenance intervals. In addition, change the fluid and filter if the transmission is disassembled for any reason. ...

    Lights-On Reminder
    If the headlights or parking lights are on after the ignition is turned to the LOCK position, a chime will sound to alert the driver when the driver’s door is opened. ...