Subaru Forester Oil Capacity Chart by Year and Engine Type

Getting the right amount of oil into your Subaru Forester sounds simple until you pour in the wrong quantity. Too little oil and your boxer engine risks serious internal damage. Too much and you could blow seals or create excess crankcase pressure. That's exactly why a Subaru Forester oil capacity chart is one of the most referenced pieces of information for owners doing their own maintenance. Whether you're changing oil in a first-gen 1998 model or a brand-new 2024 Forester, knowing the precise capacity by engine and year saves you time, money, and engine headaches.

What Oil Capacity Does My Subaru Forester Actually Need?

Subaru Forester oil capacity depends on two things: the engine size and whether you're changing the oil filter. The capacity listed here includes a filter change, which is the standard recommendation. Using the wrong volume even by half a quart can affect oil pressure and lubrication across the horizontally opposed boxer engine.

1998–2002 Subaru Forester (First Generation – SF)

Engine: 2.5L SOHC Boxer 4-cylinder (EJ25)
Oil Capacity (with filter): 4.2 quarts (4.0 liters)
Oil Type: 5W-30 conventional or synthetic

2003–2005 Subaru Forester (Second Generation – SG, Non-Turbo)

Engine: 2.5L SOHC Boxer 4-cylinder (EJ253)
Oil Capacity (with filter): 4.2 quarts (4.0 liters)
Oil Type: 5W-30

2004–2005 Subaru Forester XT (Turbocharged)

Engine: 2.5L Turbo Boxer 4-cylinder (EJ255)
Oil Capacity (with filter): 4.5 quarts (4.3 liters)
Oil Type: 5W-30 synthetic recommended

If you own a turbo Forester from this era, you might also find our DIY oil change guide for the 2005 Forester XT helpful for the full step-by-step procedure.

2006–2008 Subaru Forester (SG, Non-Turbo)

Engine: 2.5L SOHC Boxer 4-cylinder (EJ253)
Oil Capacity (with filter): 4.2 quarts (4.0 liters)
Oil Type: 5W-30

2009–2010 Subaru Forester (Third Generation – SH)

Engine: 2.5L SOHC Boxer 4-cylinder (EJ253)
Oil Capacity (with filter): 4.4 quarts (4.2 liters)
Oil Type: 0W-20 or 5W-30

2009–2010 Subaru Forester XT (Turbocharged)

Engine: 2.5L Turbo Boxer 4-cylinder (EJ255)
Oil Capacity (with filter): 4.8 quarts (4.5 liters)
Oil Type: 5W-30 synthetic

2011–2013 Subaru Forester (SH, Non-Turbo)

Engine: 2.5L SOHC Boxer 4-cylinder (EJ253)
Oil Capacity (with filter): 4.4 quarts (4.2 liters)
Oil Type: 0W-20

2014–2018 Subaru Forester (Fourth Generation – SJ, Non-Turbo)

Engine: 2.5L FB25 Boxer 4-cylinder
Oil Capacity (with filter): 4.4 quarts (4.2 liters)
Oil Type: 0W-20 synthetic

2014–2018 Subaru Forester 2.0XT (Turbocharged)

Engine: 2.0L Turbo Boxer 4-cylinder (FA20DIT)
Oil Capacity (with filter): 4.8 quarts (4.5 liters)
Oil Type: 0W-20 synthetic

2019–2024 Subaru Forester (Fifth/Sixth Generation – SK)

Engine: 2.5L FB25 Boxer 4-cylinder
Oil Capacity (with filter): 4.4 quarts (4.2 liters)
Oil Type: 0W-20 synthetic

Why Does Subaru Recommend Different Oil Types Over the Years?

Early Forester models used 5W-30, both conventional and synthetic. Starting around 2011, Subaru shifted to 0W-20 across most non-turbo models. This thinner oil improves fuel economy and flows faster during cold starts, which matters for the tighter tolerances in the newer FB-series engines. Turbo models consistently need synthetic oil because of the higher heat and stress forced induction puts on the lubricant.

Always check your owner's manual or the oil cap itself. Subaru prints the recommended viscosity right on the cap in most Forester years.

What Happens If I Overfill or Underfill the Oil?

Overfilling by even a quart can cause the crankshaft to whip the oil into foam. Foamed oil doesn't lubricate properly, and you'll see erratic oil pressure readings. Seals can also blow from excess crankcase pressure.

Underfilling is more straightforward the oil pump can't maintain consistent pressure, especially around turns or on inclines. The boxer engine sits low and flat, which helps with gravity-fed oil return, but it still needs enough volume in the sump to keep everything coated. If you're unsure how to read your dipstick accurately, we covered the process in our guide on how to check the oil level in a 2005 Subaru Forester.

Does the Oil Filter Change the Capacity?

Yes. Every figure above assumes you're replacing the oil filter. If you're only draining the oil pan and reusing the old filter (not recommended), you'd subtract roughly 0.2–0.3 quarts from the listed capacity. But since oil filters are inexpensive and trap contaminants that break down over time, always swap the filter during an oil change.

Subaru Foresters use a cartridge-style oil filter on newer models (2014+) and a spin-on filter on older ones. Make sure you have the correct filter before starting. The full oil change procedure, including filter replacement steps, is covered in our Subaru Forester oil change procedure walkthrough.

Common Mistakes When Using an Oil Capacity Chart

Ignoring engine variant. The turbo XT models hold significantly more oil than the naturally aspirated versions. Mixing up the two means running half a quart or more short.
Draining into a dirty pan and eyeballing. If you measure how much came out, make sure the drain pan is clean and free of old fluid. Residual coolant or old oil skews your reading.
Not waiting long enough for a full drain. Give the oil at least 10–15 minutes to fully drain from the boxer engine's flat design. Some owners warm the engine for 5 minutes before draining to thin the oil and speed things up.
Trusting only the dipstick right after filling. New oil needs to circulate through the filter and passages first. Start the engine, let it idle for a minute, shut it off, wait 2–3 minutes, then check the dipstick.
Using the wrong viscosity. A chart showing capacity won't help if you're putting 10W-40 into an engine designed for 0W-20. The viscosity matters as much as the volume.

How Often Should I Change the Oil in My Forester?

Subaru recommends oil changes every 6,000 miles or 6 months for most recent models using synthetic oil. Older Foresters on conventional oil typically fall in the 3,000–5,000 mile range. Turbo models tend to break down oil faster due to heat, so many owners of XT trims change every 4,000–5,000 miles regardless of what the manual says.

If you drive in dusty conditions, tow, or make a lot of short trips in cold weather, shorter intervals are a smart move. Oil analysis services like Blackstone Labs can tell you exactly how your driving habits affect oil life.

Quick Reference: Oil Capacity at a Glance

2.5L Non-Turbo (EJ series): 4.2 quarts with filter
2.5L Non-Turbo (FB series): 4.4 quarts with filter
2.5L Turbo (EJ255): 4.5–4.8 quarts with filter
2.0L Turbo (FA20DIT): 4.8 quarts with filter

For font styling on your maintenance records or printable garage sheets, you might find Montserrat a clean and easy-to-read choice.

Pre-Oil-Change Checklist for Any Subaru Forester

Confirm your exact year, engine, and trim (turbo vs. non-turbo) from the VIN or owner's manual
Purchase the correct oil type and viscosity check the oil cap if the manual is missing
Buy the right oil filter (cartridge or spin-on depending on model year)
Have a drain pan that holds at least 6 quarts, a funnel, and a 17mm socket or wrench for the drain plug
Warm the engine for 3–5 minutes before draining to thin the oil
Let the oil drain for at least 10–15 minutes before reinstalling the drain plug
Pre-fill the new filter with fresh oil before installing (for spin-on types)
Pour in about 90% of the listed capacity, start the engine briefly, then top off after checking the dipstick
Record the date and mileage so you know when the next change is due