Making sure your car’s oil levels remain adequate and consistent is one of the best ways to ensure you get the best performance out of your car, so good on you! The preferred oil type for your 2016 Subaru Forester is SAE 5W-30 full synthetic oil. You should be able to find this at just about any gas station, auto parts store, or even the next big box store you see.
Synthetic oil might be a bit more expensive up front, but it offers better engine protection and lasts longer than regular oil—so you should be able to go a while without needing another change.