What are the two types of non-scheduled vehicle maintenance?

[Victoria]

Non-scheduled vehicle maintenance is divided into break-in period maintenance and seasonal maintenance. China's vehicle maintenance system is classified into three categories: routine maintenance, scheduled maintenance, and non-scheduled maintenance. Scheduled maintenance is further divided into first-level, second-level, and third-level maintenance. More details about non-scheduled maintenance are as follows: 1. Vehicle break-in period: This refers to the initial mileage of a new vehicle or a vehicle after major repairs. During this initial usage phase, the friction surfaces of moving parts undergo mutual grinding, continuously improving fitting precision to smoothly transition to normal operating conditions. The service life, operational reliability, and fuel economy of a vehicle largely depend on the break-in process during its initial use. Therefore, the purpose of break-in period maintenance is to help the vehicle quickly adapt to various working conditions, significantly extend its service life, and reduce repair costs. 2. Seasonal maintenance: Changes in seasons and climate conditions inevitably affect vehicle operating conditions, impacting performance, service life, and fuel economy. To ensure reliable operation of vehicles in different regions and seasons, seasonal maintenance is performed before seasonal changes, combined with scheduled maintenance, to help vehicles smoothly adapt to regional and seasonal variations.

[McElaina]

From my years of driving experience, I've concluded that non-scheduled maintenance really boils down to two categories. The first is breakdown repairs – when something suddenly goes wrong while driving, like a red warning light on the dashboard or gear shifting issues, requiring immediate attention at a repair shop rather than waiting for the next scheduled service. The second is preventive checks, such as inspecting tire wear, brake pad thickness, or topping up windshield washer fluid before a countryside trip or seasonal change, preventing minor issues from escalating. I remember last autumn when my wipers failed on the highway – thankfully I hadn't skipped those preventive checks, or driving in the dark would have been dangerous. Developing this habit keeps vehicles durable and trouble-free.

[ValerieLee]

In the field of automotive maintenance, non-scheduled maintenance is primarily divided into two common categories. One addresses emergency repairs, such as fixing engine oil leaks or replacing a worn-out battery immediately to avoid disrupting daily use. The other involves preemptive adjustments based on usage conditions, like adding antifreeze in cold regions during winter or changing air filters on dusty roads, determining the optimal timing through experience for efficiency. Though not following the manual's schedule, these practices extend component lifespan and maintain vehicle health. I recommend owners pay attention to unusual noises or warning lights and never overlook detailed maintenance.

[SanThomas]

From a safety perspective, irregular car maintenance can be divided into two key approaches: The first is reactive repairs after problems occur, such as replacing a flat tire with a new one. The second is proactive preventive measures, like checking the braking system before a long trip or testing the lights before rainy weather. Having driven for many years, I've seen too many accidents caused by neglecting these aspects, where minor maintenance could have prevented major troubles. Addressing issues early can protect both pedestrians and your own safety on the road. A well-maintained car ensures a stable and secure driving experience.