How to Change the Oil on a Lexus IS

What You'll Need

Before you start, gather these items to make the job go smoothly. Having everything ready means you won't need to stop halfway through and search for a tool or supply.

• New oil (check your owner's manual for the correct type and amount)
• New oil filter
• Oil drain pan
• Wrench or socket set
• Oil filter wrench
• Jack and jack stands (if needed to reach the drain plug)
• Rags or paper towels
• Funnel
• Gloves (optional, but helpful to keep hands clean)

The most important item is the correct oil type for your IS. Different model years may require different oil weights. Your owner's manual will tell you exactly what to use. Using the wrong oil can affect how your engine runs and how long it lasts. Most auto parts stores can also help you find the right oil if you tell them your vehicle's year and model.

Safety First

Make sure your Lexus IS is parked on level ground before you begin. This prevents the vehicle from rolling and keeps the oil from draining unevenly. Turn off the engine and let it cool for at least five to ten minutes after running. Hot oil can cause serious burns, and hot engine parts can also burn your skin. Never rush this step—patience here keeps you safe.

If you need to raise your vehicle to reach the drain plug, use a jack to lift it, then place jack stands under the frame to support it. Never work under a car that is only held up by a jack. Jacks can fail, and a falling vehicle can cause severe injury or death. Take your time setting up safety equipment properly. It takes just a few extra minutes and could save your life.

Locate and Remove the Drain Plug

Look under your IS for the oil drain plug on the bottom of the engine. It is usually a bolt about the size of a quarter or larger. Consult your owner's manual if you are unsure where it is located. Place your drain pan underneath the plug to catch the old oil. Using your wrench or socket, turn the drain plug counterclockwise to loosen it. Once it is loose enough, carefully unscrew it by hand and set it aside in a safe place.

Let the old oil drain completely into the pan. This step takes several minutes—do not rush it. The more old oil you remove, the better your new oil will work. While you wait for the oil to drain, you can prepare other items or wipe down nearby engine parts. Once the flow slows to just a few drips, you can move on to the next step. The drain pan will be heavy and hot, so be careful when handling it.

Replace the Oil Filter

Find the oil filter on your engine. It is a cylindrical canister about the size of a soda can. If you cannot locate it, check your owner's manual or look at the engine from different angles. The filter is usually mounted on the side of the engine. Position your drain pan underneath the filter because old oil will spill out when you remove it.

Use an oil filter wrench to turn the filter counterclockwise until it comes off. The wrench grips the filter so you can loosen it without your hands slipping. Once the filter is loose, carefully unscrew it by hand and let any remaining oil drain into the pan. Wipe the filter mounting surface clean with a rag to remove any old oil or debris. Take your new filter and apply a thin layer of new oil to its rubber gasket—the ring at the top of the filter. This helps create a good seal. Screw the new filter on by hand until the gasket contacts the engine, then turn it about three-quarters of a turn more. Do not use the wrench to tighten it; hand-tight is correct.

Install the Drain Plug

Wipe the drain plug clean with a rag to remove any old oil or debris stuck to it. Reinstall the plug by screwing it back into the hole on the bottom of the engine. Tighten it snugly with your wrench, but do not overtighten it. Overtightening can damage the threads in the engine block, which is expensive to repair. If you are unsure how tight is right, aim for firm but not forceful—think of tightening a jar lid, not a bolt on a machine.

Some drain plugs have a washer or crush ring that helps seal the hole. If your plug has one, make sure it is in place before you reinstall the plug. Check your owner's manual to see if your IS has this type of plug. Once the plug is installed, double-check that it is secure and not leaking.

Add New Oil

Locate the oil filler cap on top of your engine. It usually has an oil can symbol on it. Unscrew the cap and set it aside in a clean place. Place a funnel in the opening to prevent spills. Carefully pour the recommended amount of new oil into the funnel. Pour slowly to avoid splashing. Your owner's manual will tell you exactly how much oil your IS needs.

Once you have added the oil, replace the oil filler cap and screw it back on. Start your engine and let it run for about 30 seconds. This circulates the new oil through the engine and filter. Turn off the engine and wait about one minute for the oil to settle. Then check the oil level using your dipstick. Pull the dipstick all the way out, wipe it clean with a rag, reinsert it fully, and pull it out again to read the level. The oil should reach the full mark. If it is low, add a little more oil and check again.

Dispose of Old Oil

Never pour old oil down a drain, into the ground, or into the trash. Used oil is toxic and harms the environment. It can contaminate water supplies and soil. Most communities have laws against dumping oil improperly.

Instead, take your old oil to a local recycling center, auto parts store, or service station that accepts used oil. Many of these places take it for free. Some may even pay you a small amount for it. Call ahead to confirm they accept used oil and to learn their hours. Store the old oil in a clean container with a tight lid until you can drop it off. Proper disposal protects the environment and keeps your community safe.

Key Takeaways

Changing your Lexus IS oil is a task many owners can do at home with basic tools and a little patience. The most important steps are letting the engine cool, draining all the old oil, and using the correct new oil type. Always prioritize safety by working on level ground and using proper jack stands if you need to raise the vehicle. Remember to dispose of old oil properly at a recycling center or auto parts store. If you feel unsure at any point, consult your owner's manual or ask an experienced friend for guidance. Regular oil changes help keep your IS running smoothly for years to come.

Frequently Asked Questions

How often should I change the oil in my Lexus IS?

Most Lexus vehicles need an oil change every 10,000 miles or every 12 months, whichever comes first. However, this can vary depending on your driving habits and the model year of your IS. Check your owner's manual for the exact interval recommended for your vehicle. If you drive in severe conditions—such as frequent short trips, towing, or dusty environments—you may need to change your oil more often.

What type of oil does a Lexus IS use?

The correct oil type depends on your IS model year and engine size. Most newer Lexus IS models use synthetic or synthetic blend oil, often in grades like 0W-20 or 5W-30. Your owner's manual will specify the exact type and weight your vehicle needs. Using the wrong oil can reduce engine performance and fuel economy. When in doubt, ask the staff at an auto parts store—they can look up the correct oil for your specific IS.

Can I change my Lexus IS oil without lifting the vehicle?

On many Lexus IS models, you may be able to reach the drain plug without lifting the vehicle, depending on ground clearance and your height. However, some models or situations may require you to raise the vehicle slightly. If you do need to lift it, always use a jack and secure jack stands. Never work under a vehicle supported only by a jack. If you are uncomfortable with this step, consider having a professional handle the oil change instead.

How do I know if my oil filter is on tight enough?

After you hand-tighten the oil filter until the rubber gasket touches the engine, turn it an additional three-quarters of a turn. This is the correct amount of tightness. Do not use a wrench to tighten it further—hand-tight is the standard. If the filter is too tight, it can be difficult to remove next time and may damage the threads. If it is too loose, it may leak. The three-quarter turn rule helps you get it just right.