How to Unscrew Oil Filter? Experts Guide

This guide teaches you how to unscrew oil filter without spills or damage. You’ll learn the right tools, techniques, and safety steps for a smooth oil change.

To unscrew an oil filter, turn it counterclockwise (left). First, let the engine cool and place a drain pan underneath. Use an oil filter wrench if it’s too tight to remove by hand. Grip firmly and rotate until it loosens. Once loose, unscrew it by hand and carefully lower it to avoid spilling oil.

Key Takeaways

• Use the right tool: A quality oil filter wrench ensures a secure grip and prevents slipping or damage.
• Drain oil first: Always let the engine cool and drain the oil before removing the filter to avoid burns and spills.
• Break the seal gently: Tap the filter or use a strap wrench to loosen a tight seal without crushing the can.
• Prevent mess with a drain pan: Position a pan underneath to catch any dripping oil during removal.
• Check the gasket: Ensure the old filter’s rubber seal doesn’t stay behind on the engine block.
• Dispose responsibly: Recycle used oil and filters at approved centers to protect the environment.
• Replace correctly: Hand-tighten the new filter and add a dab of oil to the new gasket before installing.

Quick Answers to Common Questions

Should I drain the oil before removing the filter?

Yes! Always drain the oil first to reduce spillage and make the filter easier to remove. It also prevents hot oil from spraying when you unscrew the filter.

Can I reuse an oil filter?

No. Oil filters are designed for single use. Reusing one can lead to poor filtration, engine damage, and oil leaks.

What if the filter is in a tight space?

Use a strap or chain wrench, which can maneuver in confined areas. You can also try a flexible socket extension or a swivel-head wrench.

How tight should I install the new filter?

Hand-tighten only—about 3/4 to 1 full turn after the gasket seats. Over-tightening can damage the seal and cause leaks.

Is it normal for oil to drip after removing the filter?

Yes, a small amount of oil may drip even after draining. Keep a rag and drain pan ready to catch any spills.

How to Unscrew Oil Filter: A Complete Step-by-Step Guide

Changing your car’s oil is one of the most important maintenance tasks you can do to keep your engine running smoothly. While draining the oil is straightforward, many people get nervous when it comes to how to unscrew oil filter—especially if it’s stuck or hard to reach. Don’t worry! With the right tools and a little know-how, removing an oil filter is simple, safe, and mess-free.

In this guide, you’ll learn exactly how to unscrew an oil filter, whether you’re a first-time DIYer or a seasoned car enthusiast. We’ll cover the tools you need, step-by-step instructions, common mistakes to avoid, and tips for handling stubborn filters. By the end, you’ll feel confident tackling your next oil change like a pro.

Why the Oil Filter Matters

Before we dive into the steps, let’s quickly talk about why the oil filter is so important. Your engine’s oil circulates through the motor, picking up dirt, metal shavings, and other contaminants. The oil filter traps these particles, preventing them from damaging internal components. Over time, the filter becomes clogged and needs to be replaced—typically every time you change your oil.

If you skip replacing the filter, dirty oil will keep circulating, reducing engine efficiency and potentially causing long-term damage. That’s why knowing how to unscrew oil filter properly is a key part of vehicle maintenance.

Tools and Supplies You’ll Need

Before starting, gather these essential tools and supplies:

• Oil filter wrench (chain, strap, or socket type)
• Socket wrench or ratchet set
• Drain pan (at least 5-quart capacity)
• Funnel
• New oil filter (correct model for your vehicle)
• New engine oil (check your owner’s manual for type and amount)
• Gloves and safety glasses
• Rags or paper towels
• Jack and jack stands (if needed for access)

Having everything ready saves time and reduces frustration, especially if you’re working in a tight space.

Step 1: Prepare Your Vehicle

Let the Engine Cool

Never attempt to remove the oil filter immediately after driving. Hot oil can cause severe burns, and the engine components will be dangerously hot. Wait at least 30 minutes after turning off the engine—or longer if it was recently driven.

Park on Level Ground

Make sure your car is parked on a flat, stable surface. This ensures the oil drains evenly and reduces the risk of the vehicle shifting while you’re working.

Lift the Vehicle (If Needed)

Some oil filters are located underneath the engine and require you to get under the car. Use a jack and jack stands to lift the vehicle safely. Never rely solely on a jack—always use jack stands for support. If you’re not comfortable lifting the car, consider using ramps or visiting a mechanic.

Step 2: Drain the Old Oil

Locate the Oil Drain Plug

The drain plug is usually a large bolt on the bottom of the oil pan. Place your drain pan directly underneath it.

Remove the Drain Plug

Use a socket wrench to loosen the drain plug counterclockwise. Once it’s loose, unscrew it by hand and let the oil flow into the pan. Be ready—oil can gush out quickly!

Wait for Complete Drainage

Let the oil drain for at least 10–15 minutes. Tapping the oil pan gently can help dislodge any remaining oil. Once it’s fully drained, clean the drain plug and reinstall it securely.

Step 3: Locate the Oil Filter

Oil filters are typically found near the engine block, often on the side or bottom. They’re cylindrical and made of metal or heavy-duty plastic. Refer to your owner’s manual if you’re unsure of the location.

Some filters are easy to reach from above, while others require you to work from underneath the vehicle. Knowing where it is ahead of time helps you plan your approach.

Step 4: Choose the Right Tool to Unscrew the Oil Filter

There are several types of oil filter wrenches, each suited for different situations:

• Strap Wrench: A band of rubber or nylon that tightens around the filter when you pull the handle. Great for tight spaces and preventing damage.
• Chain Wrench: A chain wraps around the filter and tightens as you turn. Ideal for stubborn filters.
• Socket Wrench Adapter: Fits over the end of the filter like a socket. Best for filters with a hexagonal top.
• Pliers or Adjustable Wrench: A last resort—can slip and damage the filter.

For most people, a strap or chain wrench offers the best balance of grip and control.

Step 5: Break the Seal and Unscrew the Filter

Position the Wrench

Slide your chosen wrench over the filter, making sure it grips firmly. If using a strap wrench, loop it around and tighten the strap.

Turn Counterclockwise

Oil filters are threaded to turn counterclockwise (lefty loosey). Apply steady, even pressure. If it doesn’t budge, don’t force it—try one of the tips below.

Use Gentle Taps (If Stuck)

Sometimes, the filter’s rubber gasket sticks to the engine block. Gently tap the side of the filter with a rubber mallet or the handle of a screwdriver to break the seal. This often loosens it enough to turn by hand.

Apply Penetrating Oil (For Stubborn Filters)

If the filter is really stuck, spray a small amount of penetrating oil (like WD-40) around the base where the filter meets the engine. Let it sit for 5–10 minutes to loosen rust or debris.

Work It Loose Gradually

Once it starts turning, continue unscrewing it slowly. Be ready—oil may still drip out even after draining.

Step 6: Remove the Filter Carefully

As you unscrew the filter, keep it upright to prevent oil from spilling. Once it’s completely loose, lower it slowly and pour any remaining oil into your drain pan.

Inspect the Old Filter

Check the rubber gasket on the old filter. It should come off with the filter. If it’s stuck to the engine block, remove it carefully with your fingers or a rag. A leftover gasket can cause leaks when you install the new filter.

Clean the Mounting Surface

Wipe the filter mounting surface on the engine with a clean rag. Remove any oil, dirt, or old gasket material. This ensures a proper seal for the new filter.

Step 7: Install the New Oil Filter

Pre-Lubricate the Gasket

Dip your finger in fresh oil and lightly coat the rubber gasket on the new filter. This helps create a better seal and makes future removal easier.

Hand-Tighten Only

Screw the new filter onto the engine by hand. Turn it clockwise until it’s snug—usually about 3/4 to 1 full turn after the gasket makes contact. Do not over-tighten! Over-tightening can damage the gasket or make future removal difficult.

Step 8: Refill with Fresh Oil

Use a Funnel

Remove the oil filler cap on top of the engine and insert a funnel. Pour in the recommended amount and type of oil (check your owner’s manual).

Check the Oil Level

Wait a minute for the oil to settle, then use the dipstick to check the level. Add more if needed, but avoid overfilling.

Start the Engine and Check for Leaks

Start the engine and let it run for 10–15 seconds. Turn it off and inspect the filter and drain plug for leaks. If everything looks good, you’re done!

Troubleshooting Common Issues

Filter Won’t Budge?

If the filter is extremely tight, try using a longer wrench for more leverage. You can also wrap a rubber band around the filter for extra grip. In extreme cases, carefully puncture the filter with a screwdriver and use it as a lever—but do this only as a last resort and with caution.

Oil Leaking After Installation?

This is usually caused by a damaged gasket, over-tightening, or a leftover old gasket. Turn off the engine, remove the filter, clean the surface, and reinstall with a new filter.

Filter Crushed or Damaged?

Avoid using excessive force with pliers or adjustable wrenches. These can crush the filter, making it harder to remove. Use a proper oil filter wrench instead.

Safety and Environmental Tips

Always wear gloves and safety glasses to protect your skin and eyes from hot oil and debris. Dispose of used oil and filters at a recycling center or auto parts store—most accept them for free. Never pour oil down drains or on the ground.

Conclusion

Learning how to unscrew oil filter doesn’t have to be intimidating. With the right preparation, tools, and technique, it’s a simple part of routine car maintenance. By following these steps, you’ll keep your engine clean, extend its life, and save money on mechanic visits.

Remember: safety first, take your time, and don’t rush the process. A little patience goes a long way—especially when dealing with a stubborn filter. Now that you know the ins and outs of oil filter removal, you’re ready to tackle your next oil change with confidence.