There can be several reasons why a brand new engine on a motorcycle may start using up oil quickly. Here are a few possible explanations:
Engine Break-In Period: New engines often require a break-in period during which the internal components settle and wear into their optimal positions. During this break-in period, which typically lasts for the first few thousand miles, the engine may consume more oil than usual as the piston rings and cylinder walls establish proper sealing. This increased oil consumption is generally considered normal during the break-in phase.
Cylinder Wall Glazing: Sometimes, during the manufacturing process, a thin film of glaze can form on the cylinder walls. This glaze may hinder proper piston ring seating, resulting in increased oil consumption. As the engine runs, the glaze gradually wears off, and oil consumption decreases. This process is also part of the break-in period.
Improper Installation or Assembly: In some cases, the increased oil consumption may be due to errors during the engine installation or assembly process. Issues such as faulty gaskets, loose fittings, or improper torque specifications can cause oil leaks, leading to rapid oil consumption. It's important to ensure that the engine is correctly installed and all components are properly tightened.
Defective Components: Occasionally, a new engine may have defective components, such as faulty piston rings, valve seals, or gaskets. These defects can result in excessive oil consumption right from the start. If you suspect a manufacturing defect, it is advisable to have the motorcycle checked by a qualified mechanic or contact the manufacturer for assistance.
It's worth noting that some oil consumption is considered normal for motorcycles, especially during high-performance or high-revving use. However, if you believe that the oil consumption is excessive or if you are experiencing other issues, it is recommended to consult a professional motorcycle technician to diagnose and address the specific problem.