What is Cold Running-in for New Cars?
1 Answers
New car cold running-in refers to the process where engine components' friction surfaces transition from their initial manufactured state to operational condition before the engine reaches normal working temperature. After running-in, these parts' surfaces become smoother, contact areas between components increase, and fits become tighter, preventing localized overheating and seizure under extreme conditions. Cold running-in procedures: Before driving: Pre-warm the cold engine. Newly manufactured vehicles require proper warm-up as components still have initial wear surfaces; While driving: Shift gears promptly. During the break-in period for manual transmissions, use appropriate gear selection for different driving conditions, avoiding high-gear low-RPM or low-gear high-RPM situations; During maintenance: New vehicles require timely servicing during break-in period. The first maintenance is particularly crucial for ensuring subsequent safe operation. Cold running-in precautions: Idle warm-up for 30 seconds to 1 minute before driving; Avoid overloading during break-in; Use quality fuel and engine oil; Control driving speed; Avoid sudden acceleration, speeding, and emergency braking; Address any malfunctions immediately; Maintain proper oil, coolant levels and tire pressure to prevent leaks, replenishing when necessary.
