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  • Writer's pictureHIGHGRADE Lubricants

When is Break In Oil Used: Benefits of AMSOIL Break In Oil

AMSOIL Break in Oil Engine Block

The process of breaking in a new or rebuilt engine is an essential step in ensuring its long-term performance and durability. This break-in period allows for the proper seating of components, such as piston rings and cylinder walls, and helps to establish a strong foundation for the engine's future operation. A critical aspect of this process is the use of break-in oil, a special type of engine oil formulated to aid in the initial running of new or rebuilt engines, like AMSOIL Break in Oil.

Break-in oil is different from regular automotive engine oil in its formulation. It typically contains a higher concentration of anti-wear additives, such as zinc and phosphorus, which are essential in protecting the engine's internal components during the initial break-in period. These additives help to guard against premature wear as the engine components mesh and settle into their operating positions. Engine rebuilders do this all the time.

For engine builders, the break-in period is a crucial stage. During the assembly of a new or rebuilt engine, even the smallest imperfections on component surfaces can lead to issues. As the engine runs for the first time, these minute imperfections are worn away, creating a smoother, more efficient interface between moving parts. The use of break-in oil facilitates this process by providing enhanced lubrication and protection while these surfaces are smoothed out.

When it comes to an oil change or service oil change for a new or rebuilt engine, choosing the right type of oil is essential. During the break-in period, the engine may shed more metal particles and contaminants as components wear in. Break-in oils are designed to suspend and carry away these particles without causing damage to the engine. After the break-in period, which can vary in length depending on the engine and its use, it's important to change the oil and replace it with a standard automotive engine oil suitable for regular use.

The use of full synthetic oil change in new or rebuilt engines after the break-in period is a topic of debate among engine builders and enthusiasts. Some prefer to switch to synthetic oils (aka. syn oil) immediately after the break-in period due to their superior lubricating properties and ability to withstand high temperatures. Others opt for a gradual transition, using a conventional oil for a certain period before switching to synthetic. The decision often depends on the specific engine, its intended use, and the manufacturer's recommendations.

Regardless of the type of motor oil used after the break-in period, the importance of oil and oil filter changes cannot be overstated. Regular oil changes ensure that any lingering particles from the break-in process are removed, and the engine is maintained with clean, effective lubrication. High-quality oil filters are also essential during this time, as they capture any residual particles that could otherwise cause wear.

The price of oil change for a rebuilt engine, especially during the break-in period, can be higher due to the specialized nature of break-in oils. These oils are often more expensive than standard motor oils, but their use is crucial for the long-term health and efficiency of the engine. Investing in the right break-in oil and adhering to a proper oil change schedule during and after the break-in period is a small price to pay for the extended life and improved performance of a rebuilt engine.

Brands like AMSOIL offer specialized break-in oils designed to provide optimal protection during the critical early life of an engine. These products, like AMSOIL Break in Oil, are often the choice of professional engine builders and the car enthusiast who understand the importance of proper engine break-in.

In summary, the use of break-in oil for new and rebuilt engines is a crucial aspect of engine care. This specialized syn oil helps to protect the engine during its initial operation, ensuring that components are properly seated and any imperfections are smoothed out. The break-in period sets the foundation for the engine's future performance and longevity, making the choice of oil and adherence to oil change schedules critically important. Whether using break-in oil for a newly built engine or transitioning to a regular oil after the break-in period, careful maintenance and the use of high-quality products like AMSOIL Break in Oil can significantly enhance the life and efficiency of the engine.


*If there is any discrepancy in the information in this article and the AMSOIL Corporate website, the latter will be taken as correct.

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