How to Change Your Subaru's Oil: A Step-by-Step Guide

Why Regular Oil Changes Matter

Oil keeps your Subaru's engine running smoothly. Over time, oil breaks down and collects dirt and debris. Changing your oil regularly helps your engine last longer and run better. Most Subaru owners change their oil every 3,000 to 10,000 miles, depending on the engine type and oil you use. Check your owner's manual for your specific vehicle's schedule.

Clean oil reduces friction between engine parts, which keeps your Subaru cooler and more efficient. Dirty oil can cause your engine to work harder, use more fuel, and wear out faster. By staying on top of oil changes, you're investing in your vehicle's long-term health and performance. Regular maintenance also helps you catch other potential problems early.

What You'll Need

Before you start, gather these items to make the job easier and safer:

• New oil (the correct type and amount for your Subaru model)
• A new oil filter
• An oil drain pan
• A wrench or socket set
• An oil filter wrench
• Jack and jack stands (if you need to raise your vehicle)
• Ramps or a level surface
• Clean rags or paper towels
• Safety glasses
• Work gloves
• A flashlight or work light

Having everything ready before you start saves time and frustration. Most of these items are inexpensive and useful for other car maintenance tasks. You can buy oil and filters at auto parts stores, and many stores also sell drain pans and wrenches if you don't have them at home. Make sure you purchase the correct oil type and weight for your specific Subaru model—your owner's manual lists this information.

Step 1: Warm Up Your Engine

Start your Subaru and let it run for a few minutes. Warm oil flows better than cold oil, so it drains more completely from the engine. Turn off the engine and wait about five minutes before you begin draining. This gives the oil time to cool slightly so you don't burn yourself, but it's still warm enough to flow easily.

Never work on a hot engine directly after it's been running at full temperature. The oil, engine parts, and drain plug can be extremely hot and cause serious burns. The five-minute wait is a good safety practice that also makes the job more comfortable to do.

Step 2: Locate the Oil Drain Plug

Look under your Subaru's engine. The drain plug is a bolt at the bottom of the oil pan. It's usually a hex bolt that sticks down from the lowest point of the engine. Consult your owner's manual if you're unsure where it is on your specific model.

If your Subaru sits low to the ground, you may need to raise it slightly with a jack and secure it on jack stands. Never work under a vehicle supported only by a jack—always use jack stands for safety. If you use ramps instead, drive slowly and carefully onto them and engage the parking brake firmly.

Step 3: Drain the Old Oil

Place your drain pan underneath the plug. Use your wrench to loosen the plug by turning it counterclockwise. Once it's loose enough, carefully unscrew it by hand. Let all the old oil drain into the pan. This may take several minutes, so be patient and let gravity do the work.

Be careful—the oil may still be warm even after the five-minute wait. You can use a rag to protect your hand while unscrewing the plug. Position the drain pan so that the oil flows into it cleanly and doesn't splash onto the ground or your clothes. Once the oil stops dripping, you're ready to move to the next step.

Step 4: Replace the Drain Plug

Wipe the drain plug clean with a rag. Screw it back in by hand first, then tighten it with your wrench. Don't over-tighten—just snug it down firmly. Over-tightening can strip the threads or crack the plug, which leads to expensive repairs.

Some drain plugs have a rubber or metal washer that helps seal the connection. If your plug has one, make sure it's still in place and not damaged. If it looks worn or cracked, replace it with a new one. A good seal prevents leaks that could damage your engine or the ground beneath your vehicle.

Step 5: Replace the Oil Filter

Find your oil filter, usually located on the side or top of the engine. Use an oil filter wrench to loosen it by turning counterclockwise. Once loose, unscrew it by hand. Some oil may spill out—that's normal. Position your drain pan underneath to catch any drips.

Before installing the new filter, apply a thin layer of new oil around the rubber gasket (the ring on top). This helps create a good seal and makes it easier to remove the filter next time. Screw the new filter on by hand until the gasket touches the engine, then turn it about three-quarters of a turn more. Don't use the wrench for the new filter—hand-tight is correct. A filter that's too tight is hard to remove later and can damage the seal.

Step 6: Add New Oil

Locate your oil filler cap on top of the engine and remove it. Pour in the correct amount of new oil for your Subaru model. Check your owner's manual for the exact amount—this is important because too much or too little oil can damage your engine. Replace the cap when finished.

Pour slowly and carefully to avoid spilling oil on the engine or surrounding parts. If you do spill some, wipe it up with a rag once the engine cools. Spilled oil can be a fire hazard and also makes a mess under your vehicle.

Step 7: Check the Oil Level

Start your engine and let it run for about 30 seconds. This circulates the new oil and fills the filter. Turn off the engine and wait a few minutes for the oil to settle back into the pan. Pull out the dipstick, wipe it clean with a rag, reinsert it fully, then pull it out again to check the level. Add more oil if needed until it reaches the full mark.

Checking the level twice is important because the first wipe removes old residue from the stick, and the second check gives you an accurate reading. Don't overfill—extra oil can damage seals and cause leaks. If the level is between the minimum and maximum marks, your oil level is good.

Step 8: Dispose of Old Oil

Never pour old oil down the drain or into the ground. It's harmful to the environment and often illegal. Take it to a recycling center, auto parts store, or service station that collects used oil. Many places take it for free or may even pay you a small amount.

Store used oil in a clean container with a tight lid until you can take it to a recycling location. Keep it away from children and pets. Most communities have several options for oil disposal—a quick online search or call to your local waste management facility can help you find the nearest location.

Key Takeaways

• Regular oil changes keep your Subaru's engine healthy and running smoothly.
• Gather all necessary tools and materials before you start the job.
• Always let your engine warm up and then cool slightly before draining oil.
• Replace both the drain plug and the oil filter during each oil change.
• Check your owner's manual for the correct oil type and amount for your specific model.
• Dispose of old oil responsibly at a recycling center or auto parts store.
• Take your time and follow each step carefully for best results.

Frequently Asked Questions

How often should I change my Subaru's oil?

The recommended oil change interval depends on your Subaru model and the type of oil you use. Most newer Subarus with synthetic oil can go 10,000 miles between changes, while older models or those using conventional oil may need changes every 3,000 to 5,000 miles. Check your owner's manual for your specific vehicle's schedule. Following the manufacturer's recommendation helps keep your engine in top condition.

What type of oil does my Subaru need?

Different Subaru models require different oil types and weights. Your owner's manual lists the exact specification for your vehicle. Common options include 0W-20, 5W-30, and 10W-30, depending on your model year and engine type. Using the wrong oil can affect engine performance and longevity. When in doubt, ask an auto parts store employee—they can look up your vehicle's requirements by year, make, and model.

Can I change my Subaru's oil if I've never done it before?

Yes, changing your oil is a task many Subaru owners can do themselves with basic tools and patience. This guide walks you through each step. Take your time, refer to your owner's manual frequently, and don't hesitate to ask for help if you're unsure about something. If you're not comfortable working under your vehicle or handling hot oil, a mechanic can do the job for you. There's no shame in having a professional handle maintenance tasks.

What should I do if I spill oil while changing it?

If you spill oil on the ground, let it dry completely before cleaning it up. Once dry, you can sweep it up or use absorbent materials like sand or kitty litter to soak it up. Never wash oil down a storm drain—it harms the environment. If you spill oil on your skin, wash it off with soap and water. If you spill a large amount on the ground, check your local regulations about cleanup and disposal.