The recommended engine oil for a Yamaha SZ motorcycle may vary depending on factors such as the model year and specific variant of the bike. It's crucial to consult the owner's manual or contact an authorized Yamaha dealership for the most accurate and up-to-date information. The owner's manual will provide the manufacturer's recommended oil viscosity and specifications for optimal performance and engine protection.
In general, Yamaha motorcycles often utilize 10W-40 or 20W-40 viscosity grade engine oils. It's important to choose an oil that meets or exceeds the specifications outlined by Yamaha to ensure compatibility and proper lubrication. Additionally, consider using oils specifically formulated for motorcycles to account for the unique demands of motorcycle engines, such as high-revving nature and wet clutch systems.
To ensure the best results and maintain your motorcycle's warranty, it's always recommended to follow the manufacturer's guidelines regarding engine oil selection and change intervals.