Hello! Well, the quality of the oil indicates that it's time for you to change the oil. Here's a tip:
Insert the dipstick into the pipe and pull it out again. Check the small indication levels to see how high the oil runs up the dipstick. Add oil to the car if the level falls below the minimum mark!
Technically, every driver should know how to do it! So, keep in mind alright ?
For more information on the things every driver should know how do it, check out this article: https://bit.ly/2yot8Je