What size tool do I need to change my oil?

Changing your own oil can be a rewarding experience that saves you money compared to taking your car to a mechanic. However, having the right tools for the job makes the process much easier. The most important tool you’ll need is the correct oil filter wrench size to loosen and remove your oil filter.

What Does an Oil Filter Wrench Do?

An oil filter wrench is a specialized tool used to grip and turn the oil filter canister to remove it when changing your oil. Most oil filters are located under the car attached to the engine block. Oil filters are screwed on very tightly to create a tight seal and prevent leaks. The tightness makes them difficult to remove by hand, so a filter wrench gives you the leverage and grip needed to get them off.

Choosing the Correct Oil Filter Wrench Size

Oil filters come in a variety of sizes, so you need an oil filter wrench that matches the dimensions of your specific filter. Filter sizes are measured by diameter or sometimes width. The most common oil filter sizes are:

  • 2 1⁄4 inches
  • 2 3⁄4 inches
  • 3 inches
  • 3 1⁄3 inches

You can use a adjustable oil filter wrench that has a range of sizes. Make sure the adjustable wrench can open wide enough to fit your filter size. There are also specific oil filter wrench sizes like a 2 1⁄4 inch wrench or 3 inch wrench designed to only fit that diameter filter.

Tips for Measuring Your Oil Filter

  • Look in your owner’s manual for the factory oil filter part number, then lookup the dimensions for that part online.
  • If you don’t have the manual, locate the filter under your car and measure the outer diameter with a measuring tape.
  • Write down the measurements so you know what size wrench you need.
  • You can also take the old oil filter with you to the auto parts store and match it up with wrenches on the shelf.

Other Oil Change Tools

In addition to the oil filter wrench, here are some other helpful tools to have for DIY oil changes:

Oil Drain Pan

An oil drain pan captures the used oil as it drains out of the engine. Look for one with a capacity of at least 4 quarts. The deeper the pan the better to avoid spills. Drain pans have a spout for cleanly pouring out the old oil into a storage container.

Ratchet and Socket Set

Most oil drain plugs require a 3⁄4 inch or 13/16 inch socket to remove. A ratchet wrench with interchangeable sockets makes accessing and removing the plug easy. The ratchet provides leverage for loosening stuck plugs.

Oil Filter Cap Wrench

If your filter has a threaded metal end cap, you’ll need this special wrench to loosen and remove it before taking the filter off. Filter cap wrenches come in common sizes like 1 1⁄16 inch, 1 3⁄16 inch, 1 5⁄16 inch.

Torque Wrench

A torque wrench ensures you tighten the drain plug and oil filter cap to the correct tightness specified for your vehicle. This prevents overtightening that can damage the threads.

Funnel

A funnel makes it cleaner and easier to pour new oil into the engine without spilling. Look for one with a wide mouth and extension spout to reach down into the fill hole.

Oil Filter Housing Cap Wrench

Some oil filter housings have a plastic cover that needs removed before accessing the filter. This specialized wrench grips and twists off the housing cap.

Oil Filter Strap Wrench

If you can’t get enough grip with the socket-style wrench, a strap wrench may do the trick. The rubber strap wraps around the filter and provides torque.

Oil Extractor Pump

This handy vacuum pump inserts into the dipstick tube to suck out the old oil so you don’t have to drain from underneath.

Optional Helpful Items

  • Creeping oil spill mats to keep garage floor clean
  • Nitrile gloves to keep hands clean
  • Container to store used oil for recycling
  • Oil filter crusher if disposing rather than recycling

Types of Oil Filter Wrenches

There are a few styles of oil filter wrenches, each with pros and cons:

Adjustable Band Wrenches

– Advantages:Simple to use, affordable, fits wide range of filter sizes
– Disadvantages: Can slip off if not tight enough, may not work in tight spaces

Socket-Style Wrenches

– Advantages: Sturdy grip, provides leverage with ratchet handle
– Disadvantages: Only fits specific filter size

Chain/Belt Wrenches

– Advantages: Conform tightly to filter shape, work in tight areas

– Disadvantages: More expensive, still may slip

Strap Wrenches

– Advantages: Gets grip on slippery filters
– Disadvantages: Can’t get as much torque, not as durable

Whichever style you choose, make sure to get one specifically designed for oil filters. Look for rubberized or textured jaws to maximize grip. Avoid makeshift DIY wrench options which can strip the filter and leave you stranded.

Using Your Oil Filter Wrench

Once you’ve selected the proper oil filter wrench size, here are some tips for successfully removing your old oil filter:

  • Locate the filter mounting underneath your car. They are usually near the front-center attached to the engine block.
  • Loosen the old filter by hand first if you can. This breaks the seal before using the wrench.
  • Position the wrench over the filter and turn it counterclockwise to loosen.
  • Tighten the wrench firmly so it grips the filter. You may need an adjustable wrench or channel locks to tighten band-style filter wrenches.
  • Press down on the handle end and use slow, steady force to turn the filter while avoiding rounding it off.
  • Once loose, unscrew the filter by hand and let the remaining oil drain out before removing it.

DIY Oil Changes: Should You Do It Yourself?

Changing your own oil can save you money compared to paying a mechanic or shop. The satisfaction of DIYing basic car maintenance also appeals to many auto owners. However, there are some drawbacks to consider:

Pros of DIY Oil Changes

  • Cost savings – Materials are cheaper than labor rates
  • Convenience – Schedule changes when it fits your timeframe
  • Customization – Choose your preferred oil type and quality
  • Learn about your vehicle – Become more familiar with your engine
  • Avoid upsells – Prevent unnecessary add-on repairs and fees

Cons of DIY Oil Changes

  • Time investment – Have to research process and purchase supplies
  • Labor intensive – Physically demanding if lacking proper tools
  • Hassle – Messy and takes time, even for experienced mechanics
  • Disposal – Used oil must be recycled or disposed of properly
  • No expert oversight – A professional may spot other needed repairs

Conclusion

Changing your own oil requires the right size oil filter wrench for your specific vehicle make and model. Adjustable, socket, and belt-style wrenches are common options to remove oil filters securely. Always match the wrench size to your filter diameter to prevent slipping and damage. Combine the filter wrench with other essential tools like a drain pan, ratchet, and torque wrench for DIY oil changes. Consider the pros and cons of doing your own oil changes vs using a professional to make the best choice for your needs.