Your remanufactured engine needs a proper break-in period. How you treat the engine in the first 600 miles has a direct impact on its long-term performance and life expectancy. Follow these procedures carefully.
DURING THE FIRST 600 MILES
- Vary your speed. Do not drive at a single constant speed for extended periods. Varying your speed allows the engine components to seat properly. Avoid highway cruising at a locked speed during this period.
- Do not tow. Do not tow a trailer or put any heavy load on the vehicle during the break-in period.
- Check fluids daily. Check engine oil and coolant levels every day during the first 600 miles. Address any leaks or drops in level immediately.
- No synthetic oil yet. Do not use synthetic engine oil until after the first 5,000 miles. Conventional oil is required during the break-in period.
- At initial startup: Readjust valves to your vehicle manufacturer's specifications where this is applicable to your engine type.
600-MILE CHECKUP — REQUIRED
After the first 600 miles of operation, take your vehicle to an authorized service center for the following service:
- Oil and filter change
- Fuel and ignition settings inspection and adjustment
- Valve adjustment (where applicable)
This 600-mile checkup is NOT covered under warranty — it is your responsibility as the owner. However, it is required. Skipping this checkup can cause premature engine wear and may affect your warranty coverage.
AFTER THE BREAK-IN PERIOD
Once you've completed the break-in and the 600-mile checkup, continue maintaining the engine to the original manufacturer's specifications. Keep all service records from authorized shops — you'll need them if you ever file a warranty claim.
Questions about the break-in process? Call us at 1-844-XPARTS-1, Monday–Friday 9am–7pm EST or Saturday 11am–4pm EST.
