How often should the engine oil be changed during the break-in period of the Haojue USR125?
2 Answers
During the break-in period of the Haojue USR125, the first engine oil change can be done between 500 to 1,000 kilometers. After the 1,000-kilometer break-in period, the engine oil should be changed every 2,000 kilometers, and the air filter should be cleaned or replaced at the same time. Below are three characteristics of a new car during the break-in period: 1. More driving faults: Due to factors such as improper assembly of parts, new cars tend to experience more driving faults during the break-in period. 2. Higher fuel consumption: To ensure the new car operates under light load during the break-in period, carburetor cars are equipped with speed limiters, which can easily cause the air-fuel mixture to become too rich, thereby increasing fuel consumption. 3. Engine oil is prone to deterioration: During the break-in period, the rough surfaces of parts and the small gaps between them can cause the engine oil temperature to rise. Additionally, many metal shavings are worn off and fall into the engine oil, making it more susceptible to oxidation and deterioration.
When riding my new Haojue USR125, it is recommended to change the engine oil for the first time at around 500 kilometers during the break-in period. Since the engine is brand new, friction between internal metal parts generates fine debris, causing the oil to get dirty quickly. Changing it early helps prevent wear and extends the engine's lifespan. I've changed it myself using semi-synthetic oil, and the process is simple: first, warm up the bike for 10 minutes, then stop and stabilize it. Use a wrench to remove the bottom drain plug and drain the old oil. After filtering, add about 1 liter of fresh oil—avoid overfilling to prevent spills. After that, change the oil every 1,000 kilometers until the break-in period ends at 1,500 kilometers, ensuring smooth acceleration and stable engine performance. Regular maintenance is crucial—don’t skimp on this small expense, as it saves long-term repair costs and enhances riding enjoyment. DIY maintenance is fun, but if you lack the tools, just take it to a repair shop.
