The recommended oil type for a 2000 Jeep Wrangler 4-cylinder depends on the specific engine (2.5L or 4.0L - the 2000 model year used both).
You absolutely must check your owner's manual. It will specify the exact oil viscosity (like 5W-30 or 10W-30) and the type (conventional, synthetic blend, or full synthetic).
Ignoring the owner's manual could lead to engine damage. The information printed there is specific to your vehicle's engine and operating conditions.
