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:

    After Starting
    The idle speed is controlled automatically and it will decrease as the engine warms up. ...

    Energy Management Feature
    This vehicle has a safety belt system with an Energy Management feature in the front seating positions to help further reduce the risk of injury in the event of a head-on accident. This safety ...

    Transfer Case Position Indicator Lights
    The four-wheel drive indicator lights (4WD and 4 LOW) are located in the instrument cluster. The NEUTRAL indicator light is located on the transfer case switch. If there is no indicator light on ...