Note:Regularly monitoring the oil level in your motorcycle is essential for its smooth operation. While engine oil typically has a lifespan of 5 to 8 years when stored properly in a sealed container, this duration significantly shortens to 6 months once the bottle is opened. Therefore, it's advisable to replace the oil every 6 months to ensure optimal performance and engine health. Additionally, changing the oil based on the mileage specified in your motorcycle's manual is also recommended to maintain its longevity and efficiency.