Do You Need to Break In New Car Engines?
When you buy a new car, one of the first things you may wonder is whether or not you need to break in the engine. Breaking in an engine is the process of running it at varying speeds and loads for a period of time in order to allow the moving parts to wear in properly. In the past, breaking in a new engine was considered essential, but is it still necessary with modern engines?
What Does Breaking In an Engine Do?
When an engine is first assembled, the moving parts are not perfectly smooth. There are microscopic imperfections on the surfaces of the pistons, rings, cylinders, and other components. As the engine runs, these imperfections gradually wear away, creating a smoother surface. This smoother surface reduces friction and wear, which can extend the life of the engine.
Do Modern Engines Need to Be Broken In?
Modern engines are manufactured to much tighter tolerances than engines of the past. This means that the moving parts are already very smooth, and there is less need for a break-in period. However, some manufacturers still recommend breaking in new engines, especially high-performance engines. These engines are often built with tighter tolerances and may benefit from a break-in period to ensure that the moving parts wear in properly.
How to Break In a New Engine
If you do decide to break in your new engine, there are a few things you can do to help the process along:
- Avoid high speeds and loads. During the first 500 miles or so, avoid driving at high speeds or under heavy loads. This will help to prevent the engine from overheating and will give the moving parts time to wear in properly.
- Vary your speed and load. Don’t drive at a constant speed for long periods of time. Vary your speed and load by driving in different conditions, such as city traffic, highway driving, and hill climbing.
- Change your oil early. After the first 500 miles, change your oil and filter. This will help to remove any metal shavings or other debris that may have accumulated during the break-in period.
Conclusion
Whether or not you need to break in your new engine depends on the make and model of your car. If you’re unsure, it’s always best to consult your owner’s manual. However, even if your car doesn’t require a break-in period, it’s still a good idea to drive conservatively for the first few hundred miles. This will help to ensure that your engine lasts for many years to come.
