However, generally speaking, 1997 Jeep Cherokees used either:
* 4.0L Inline-6: This was the most common engine. It typically called for 10W-30 or 5W-30 oil, though the exact recommendation will be in your owner's manual. Check the manual to see if it specifies a particular type of oil (conventional, synthetic blend, or full synthetic).
* 2.5L Inline-4: This engine might have slightly different oil recommendations. Again, consult your owner's manual.
Crucially: The owner's manual will also specify the correct oil capacity for your engine. Using the wrong oil or the wrong amount can seriously damage your engine. Don't rely on generic advice; find your owner's manual. If you don't have it, you can often find a digital copy online through a Jeep website or a reputable parts retailer.