How to Change Engine Oil on a 2015 Subaru Forester

Replacing engine oil and filter on a 2015 Subaru Forester 2.5i and 2.0 turbo. Applies to most Subaru Foresters with similar engines.

Tools:

• 17 mm socket and ratchet.
• Extensions and a breaker bar may be useful.
• Oil Drain Pan. I use Lisle Black Pan for its large capacity. 

Parts:

• Oil filter. I use Mobil 1 Performance Oil Filter. Alternatively, buy OEM for less here: Subaru 6 Pack Oil filters for 2011 and up. Legacy, Outback, Forester. Part number 15208AA15A

• Subaru oil drain plug washer/gasket. Subaru 803916010 Oil Drain Plug Washer Part number 803916010

• Synthetic motor oil 0W-20 for 2.5i and 5W-30 for 2.0i turbo.
• 0W-20 OEM here: Genuine Subaru SOA427V1315 Motor Oil 
• Castrol EDGE 0W-20 Extended Performance Synthetic Motor Oil - 1 Quart Bottle, (Pack of 6) 
• 5W-30 OEM here: Subaru SOA868V9285 Synthetic Motor Oil - 1 Gallon 
• Castrol EDGE Extended Performance 5W-30 Synthetic Motor Oil - 5 Quart 

• Subaru's owner manual says use 0W-20 for the 2.5i, however I used 5W-30 and haven't had any issues. 

• Drain Plug if necessary. 
• Fumoto F-108N Engine Oil Drain Valve for more convenient draining.

Recommended:

• Ramps, Funnel, Rags, Jack and Jack Stands.

Steps:  

• Warm up car to normal operating temperatures. 

• Optional: Jack Forester and place jack stands or drive up on ramps. RhinoRamps Vehicle Ramps (Pair, 12,000lb. GVW Capacity) 

• Open hood and remove the oil filler cap (Yellow cap below).

• Remove the oil filter (Black cylinder below) with TEKTON 12-Inch Oil Filter Pliers.

• Clean the filter housing cup so there is a clean mating surface for the new filter.

• Apply clean oil to rubber gasket on new oil filter. 

• Install new filter by hand. The owner's manual says one full rotation past hand tight. 

• Locate oil drain plug underneath car. The picture below shows the general location, plug is located in the opening below.

• Place drain pan underneath and loosen drain plug with a 17 mm socket. Careful, the oil will be hot. Let the oil drain for 15-30 minutes.

• Reinstall drain plug with new crush washer. Torque drain plug to 32 ft/lbs. 

• Pour in new engine oil. It is perfectly fine if you overfill a little bit.
• 4.8 liters/5.1 US Quarts for non turbo 2.5i engine.
• 5.1 liters/5.4 US Quarts for turbo 2.0i engine.

• Install oil filler cap, check for leaks in drain plug area.

• Drive Subaru around for a few minutes. Recheck drain plug for leaks. The oil filter housing cup may leak a little which is fine. 

Notes:
I have heard great things about Pennzoil Ultra Platinum 5W-30 Full Synthetic Motor Oil - 1 Quart, (Case of 6) so I will use that for the next oil change. So far, the Castrol EDGE 5W-30 has been doing very well.

I highly suggest WIX 57055 Oil Filter for its high bypass PSI, especially for turbo Subarus. The WIX filter is competitively priced and many enthusiasts prefer it over OEM filters.

The drain plug is at an angle and not pointed straight down. I recommend placing the pan directly where the plug is pointing.

I enjoy changing oil on the Forester because I don't have to remove any plastic panels to get to the drain plug or filter. The process is quick and straightforward.

Owners manual can be found here: 2015 Subaru Forester Manual




DIY applies to SJ Fourth Generation of Subaru Forester. 2012, 2013, 2014, 2015, 2016, 2017, 2018.

How to replace air filter on a 2015 Subaru Forester

DIY: Remove or replace the air filter on a 2015 Subaru Forester

Tools required: 
None
Screwdriver if removing intake boot (optional)

Time: 
5-10 minutes

Car: 
2015 Subaru Forester 2.5i


Steps: 

• Open the hood.
• Locate Air Filter Box on passenger side behind headlight.
• Remove two metal clips holding two halves of air filter box together. Clips are circled in red below. 
• Push the rear half of air box backwards and remove dirty air filter. 
• If there is not enough space to remove the old filter, consider removing the rear half. Loosen and remove the clamp circled below in blue and pull the intake hose backwards. Un-clip the MAF sensor wire bundle and remove the rear half.

 

•  Dirty OEM air filter below. 

 

• I replaced the old filter with a MAHLE Air Filter. The Mahle filter has more pleats for better filtration and performance. Look at the picture below to see the difference. 

  Installation:

• Install new filter with the pleats facing the headlights and flat side facing passenger. If there is excessive dirt and grime, clean the area with soapy water or a degreaser. 
• Push rear half to forward half until they fit and re-attach two metal clips. 
• If you removed the rear half, attach the rear half and MAF wiring bundle. Connect intake hose to rear half and reattach clamp. 
• That's it! 

Start the car and check for major air leaks around the air box halves and intake hose.

Notes: 
Check your air filter at least every other oil change. Air filters typically need to be replaced 10,000 - 15,000 miles depending on driving habits and air quality.

A clean air filter will improve gas mileage and power. Do not let a dirty air filter punish you at the fuel pump.

How to Change Engine Oil on a 2015 Subaru Forester

Replacing engine oil and filter on a 2015 Subaru Forester 2.5i and 2.0 turbo. Applies to most Subaru models with similar engines.

Tools:

• 17 mm socket and ratchet.
• Extensions and a breaker bar may be useful.
• Oil Drain Pan. I use Lisle Black Pan for its large capacity. 

Parts:

• Oil filter. I use Mobil 1 Performance Oil Filter. Alternatively, buy OEM for less here: Subaru 6 Pack Oil filters for 2011 and up. Legacy, Outback, Forester. Part number 15208AA15A

• Subaru oil drain plug washer/gasket. Subaru 803916010 Oil Drain Plug Washer Part number 803916010

• Synthetic motor oil 0W-20 for 2.5i and 5W-30 for 2.0i turbo.
• 0W-20 OEM here: Genuine Subaru SOA427V1315 Motor Oil 
• Castrol EDGE 0W-20 Extended Performance Synthetic Motor Oil - 1 Quart Bottle, (Pack of 6) 
• 5W-30 OEM here: Subaru SOA868V9285 Synthetic Motor Oil - 1 Gallon 
• Castrol EDGE Extended Performance 5W-30 Synthetic Motor Oil - 5 Quart 

• Subaru's owner manual says use 0W-20 for the 2.5i, however I used 5W-30 and haven't had any issues. 

• Drain Plug if necessary. 
• Fumoto F-108N Engine Oil Drain Valve for more convenient draining.

Recommended:

• Ramps, Funnel, Rags, Jack and Jack Stands.

Steps:  

• Warm up car to normal operating temperatures. 

• Optional: Jack Forester and place jack stands or drive up on ramps. RhinoRamps Vehicle Ramps (Pair, 12,000lb. GVW Capacity) 

• Open hood and remove the oil filler cap (Yellow cap below).

• Remove the oil filter (Black cylinder below) with TEKTON 12-Inch Oil Filter Pliers.

• Clean the filter housing cup so there is a clean mating surface for the new filter.

• Apply clean oil to rubber gasket on new oil filter. 

• Install new filter by hand. The owner's manual says one full rotation past hand tight. 

• Locate oil drain plug underneath car. The picture below shows the general location, plug is located in the opening below.

• Place drain pan underneath and loosen drain plug with a 17 mm socket. Careful, the oil will be hot. Let the oil drain for 15-30 minutes.

• Reinstall drain plug with new crush washer. Torque drain plug to 32 ft/lbs. 

• Pour in new engine oil. It is perfectly fine if you overfill a little bit.
• 4.8 liters/5.1 US Quarts for non turbo 2.5i engine.
• 5.1 liters/5.4 US Quarts for turbo 2.0i engine.

• Install oil filler cap, check for leaks in drain plug area.

• Drive Subaru around for a few minutes. Recheck drain plug for leaks. The oil filter housing cup may leak a little which is fine. 

Notes:
I have heard great things about Pennzoil Ultra Platinum 5W-30 Full Synthetic Motor Oil - 1 Quart, (Case of 6) so I will use that for the next oil change. So far, the Castrol EDGE 5W-30 has been doing very well.

I highly suggest WIX 57055 Oil Filter for its high bypass PSI, especially for turbo Subarus. The WIX filter is competitively priced and many enthusiasts prefer it over OEM filters.

The drain plug is at an angle and not pointed straight down. I recommend placing the pan directly where the plug is pointing.

I enjoy changing oil on the Forester because I don't have to remove any plastic panels to get to the drain plug or filter. The process is quick and straightforward.

Owners manual can be found here: 2015 Subaru Forester Manual



DIY applies to SJ Fourth Generation of Subaru Forester. 2012, 2013, 2014, 2015, 2016, 2017, 2018.