What type of motor oil do you use in a 1997 Jeep Grand Cherokee?

The type of motor oil for a 1997 Jeep Grand Cherokee depends on the engine it has. There were several engine options available that year. You must check your owner's manual to determine the correct oil specification for your specific engine.

However, generally speaking, 1997 Jeep Grand Cherokees often used conventional or synthetic blend motor oil meeting specifications like SAE 10W-30 or 5W-30. The exact viscosity grade (like 10W-30 or 5W-30) and the API certification (like SL or SJ – older standards, but possibly still applicable depending on the engine) will be specified in your owner's manual.

Do not rely on general advice. Using the incorrect oil viscosity or type can severely damage your engine. Consult your owner's manual or a Jeep-specific repair manual to find the precise recommendations for your vehicle.