What type of oil should be used on a 98 jeep Cherokee sport?

The recommended oil type for a 1998 Jeep Cherokee Sport depends on the engine it has. There were a few different engines offered that year. You must check your owner's manual to be certain. The manual will specify the exact weight and type of oil recommended by Jeep.

However, generally speaking, for a 1998 Jeep Cherokee Sport, you'll likely find recommendations for:

* Oil Type: Likely a conventional oil (though synthetic blends are increasingly common and acceptable), possibly even a high-mileage oil if the engine has significant miles. Check your owner's manual.

* Oil Weight: This will be specified in your owner's manual, but common weights for that era Jeep are likely in the range of 5W-30 or 10W-30. Again, check your manual. Using the wrong weight can damage your engine.

* API Certification: The oil will have an API certification (like SN or SM, older engines might be SL). Again, your owner's manual will clarify which certifications are appropriate.

Do not rely solely on this information. Find your owner's manual (often available online as a PDF if you don't have a physical copy) to confirm the correct oil type and weight for *your specific vehicle*. Using the wrong oil can severely damage your engine.