Tips mentioned above covers all the safety measure. I would suggest you to use engine oils that are specifically designed for bike. Depending on your usage you can choose between synthetic and semi synthetic oil. As a consumer, i myself is usin Divyol by gandhar oil. My daily travelling is 30kms. I found semi synthetic for my level of usage quite cost effective. for heavy usage, synthetic oils are preferred. However, prices of these oils are comparatively high.
You also need to check the oil level regularly to avoid any excessive wear.