The kind of oil the 2009 Subaru Outback uses iS5w-30. Having high quality oil is essential for the engine to run smoothly. You will run into issues with this fluid at some point. Bad oil can cause the engine to fail. A normal problem is a nasty burning smell. This needs to be looked into as soon as possible or the car might explode. Knocking noise may arise from the engine. You could experience poor gas mileage as well. Your oil needs to be changed eventually. Every 5,000 to 10,000 miles is a good rule of thumb. If You don't change it, there will be problems with the engine.
Anthony F.
August 29, 2019
The 2009 Subaru Outback has multiple engine options. 2009 Subaru Outback with the 2.5L Non-Turbo Flat-4 Engine: takes 5W-30 (recommended); 10W-30 or 10W-40 for temperatures above -4 F; 10W-30, 10W-40, 10W-50, 20W-40, or 20W-50 for temperatures above 95 F or heavy duty operation. 2009 Outback with the 2.5L Turbo Flat-4 Engine: takes 5W-30 (recommended); 10W-30 or 10W-40 for temperatures above -4 F; 10W-30, 10W-40, 10W-50, 20W-40, or 20W-50 for temperatures above 95 F or heavy duty operation. 2009 Outback with the 3.0L Flat-6 Engine: takes 5W-30 (recommended); 10W-30 or 10W-40 for temperatures above -4 F; 10W-30, 10W-40, 10W-50, 20W-40, or 20W-50 for temperatures above 95 F or heavy duty operation. All oil options need to be synthetic.
kyle
May 29, 2020
Conventional 5w-30, owners manual does not call for synthetic
The Questions and Answers on this page are the statements and opinions of their respective authors and not VehicleHistory.com. VehicleHistory.com
does not research or authenticate any of the Answers provided.