Jeep Wrangler: VEHICLE MAINTENANCE / Engine Oil

Engine Oil Selection — 2.0L Engine (If Equipped)

For best performance and maximum protection under all types of operating conditions, the manufacturer only recommend engine oils that are API SP/GF-6A certified and meet the requirements of the manufacturer Material Standard MS-13340. An equivalent full synthetic engine oil can be used if it meets API SP/GF-6A Certification. If API SP/GF-6A or equivalent oil is unavailable then please contact your local dealership for recommendation.

Engine Oil Selection — 3.6L Engine (If Equipped)

For best performance and maximum protection under all types of operating conditions, the manufacturer only recommends engine oils that are API Certified and meet the requirements of the manufacturer Material Standard MS-6395.

Engine Oil Selection — Diesel Engine

For best performance and maximum protection under all types of operating conditions, FCA recommends engine oils that meet the requirements of the manufacturer Material Standard MS-12991, and that are API SN certified and meet the requirements of the manufacturer.

American Petroleum Institute (API) Engine Oil Identification Symbol

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

This symbol certifies 0W-20, 5W-20, 0W-30, 5W-30 and 10W-30 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.

Synthetic Engine Oils

You may use synthetic engine oils provided the recommended oil quality requirements are met, and the recommended maintenance intervals for oil and filter changes are followed.

Synthetic engine oils which do not have both the engine oil certification mark and the correct SAE viscosity grade number should not be used.

Materials Added To Engine Oil

The manufacturer strongly recommends against the addition of any additives (other than leak detection dyes) to the engine oil. Engine oil is an engineered product and its performance may be impaired by supplemental additives.

Disposing Of Used Engine Oil And Oil Filters

Care should be taken in disposing of used engine oil and oil filters from your vehicle. Used oil and oil filters, indiscriminately discarded, can present a problem to the environment. Contact an authorized dealer, service station or governmental agency for advice on how and where used oil and oil filters can be safely discarded in your area.