How To Change The Oil Filter on A Subaru Boxer Engine

How To Change The Oil Filter on A Subaru Boxer Engine | Complete Car Care Encinitas

To keep that durable Subaru engine humming in harmony, regular maintenance is key, as you might know - changing the oil filter is one of the vital steps. But here's the twist: Subaru's unique Boxer engine design requires a specific approach. Well, you're in luck because today, we'll be sharing the steps needed to DIY your Subarus oil filter change

What's A Boxer Engine?

Before we dive into the oil filter change, let's appreciate the heart of the matter: the Subaru Boxer engine. Its horizontally opposed piston layout creates a low center of gravity, enhancing stability and handling. To maintain this masterpiece, proper maintenance is a must.

Some of the most popular Subaru models that use a boxer engine variety are:

  • Subaru Outback
  • Subaru Forester
  • Subaru Legacy
  • Subaru WRX

1. Gather Your Tools

To change the oil filter on your Subaru Boxer engine, you'll need a few tools:

  1. New oil filter (ensure it's compatible with your Subaru model)
  2. An oil filter wrench or a strap wrench
  3. Drain pan
  4. Socket set
  5. Disposable gloves
  6. A funnel
  7. Clean rags or paper towels

2. Prepare Your Workspace

Park your Subaru on a level surface and let the engine cool down. Safety first! Next, locate the oil filter, typically situated beneath the engine. Consult your owner's manual for its exact location, as it may vary slightly between Subaru models.

3. Drain the Old Oil

Position the drain pan beneath the oil pan, and use a socket set to remove the drain plug. Allow the old oil to drain completely into the pan. Be patient; this might take a few minutes.

4. Remove the Old Oil Filter

Using an oil filter wrench or a strap wrench, carefully remove the old oil filter. Be prepared for some oil spillage, so keep your drain pan handy.

5. Prepare the New Oil Filter

Before installing the new oil filter, apply a thin layer of fresh oil to the rubber gasket on the top of the filter. This will ensure a proper seal and prevent oil leaks.

6. Install the New Oil Filter

Screw the new oil filter into place by hand. Once it's snug, use your filter wrench to give it an extra quarter-turn to secure it properly.

7. Refill with Fresh Oil

Reinsert the drain plug, and then use a funnel to pour fresh, high-quality oil into the engine. Consult your owner's manual for the correct oil type and capacity for your Subaru model.

8. Check Oil Level

Start the engine and let it run for a minute or two. Then, turn it off and wait a few minutes for the oil to settle. Check the oil level using the dipstick, adding more if needed.

9. Dispose of the Old Oil and Filter

Dispose of the old oil and filter at a recycling center or an auto parts store that accepts used oil and filters.


Changing the oil filter on your Subaru Boxer engine is a manageable DIY task that ensures your engine continues to perform at its best. But remember that we are always here to help out! Even the simplest at-home tasks can get confusing at times. Complete Car Care Encinitas is always a call away, so don't hesitate to reach out!

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