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:

    Ride & Handling
    Another big surprise was how nice the Liberty was in highway driving. I found the ride quite pleasant on long commutes, with little shimmying from road imperfections and little wind noise for such ...

    Exterior
    Most debate about the Compass will come from its exterior; no one will say it isn't daring. My black test vehicle made the most of all the Compass' jutting edges and odd exterior light placements. ...

    Power Steering Fluid Check
    Checking the power steering fluid level at a defined service interval is not required. The fluid should only be checked if a leak is suspected, abnormal noises are apparent, and/or the system is n ...