2022 Jeep Wrangler Diesel Engine Break-In Recommendations
ENGINE BREAK-IN RECOMMENDATIONS —DIESEL ENGINE (IF EQUIPPED)
The diesel engine does not require a break-in period due to its construction. Normal operation is allowed, providing the following recommendations are followed:
- Warm up the engine before placing it under load.
- Do not operate the engine at idle for prolonged periods.
- Use the appropriate transmission gear to prevent engine lugging.
- Observe vehicle oil pressure and temperature indicators.
- Check the coolant and oil levels frequently.
- Vary throttle position at highway speeds when carrying or towing significant weight.
NOTE
- Light duty operations such as light trailer towing or no-load operations will extend the time before the engine is at full efficiency. Reduced fuel economy and power may be seen at this time.
- The engine oil installed in the engine at the factory is a high-quality energy conserving type lubricant. Oil changes should be consistent with anticipated climate conditions under which vehicle operations will occur. For recommended viscosity and quality grades see page 424. NON-DETERGENT OR STRAIGHT MINERAL OILS MUST NEVER BE USED.