How to Change the Oil in Your 2025 INFINITI QX55

Keeping your 2025 INFINITI QX55 in peak condition starts with regular maintenance, and one of the most essential tasks is an oil change. Fresh oil keeps your engine running smoothly, improves efficiency, and extends the life of your vehicle. While professional service is always an option, a QX55 DIY oil change is simple with the right tools and a little know-how.

In this guide, we’ll walk you through the INFINITI QX55 oil replacement process step by step, from draining the old oil to adding the recommended oil for INFINITI QX55 models. Whether you're an experienced DIYer or tackling your first oil change, this guide will help you get the job done right.

If you’d rather leave it to the experts, INFINITI of Escondido is here to help. Our skilled technicians use genuine INFINITI parts and factory-recommended oil to keep your QX55 performing at its best. Visit us or give us a call to schedule your next service today.

Essential Tools and Materials for a QX55 DIY Oil Change

Before you start, make sure you have the right tools and materials. Using the correct supplies will make your QX55 DIY oil change easier and help keep your engine in top shape.

What You Need

Here are the must-have items for a smooth INFINITI QX55 oil replacement:

• Oil – Use 5W-30 synthetic oil. Check your owner's manual for the recommended oil for INFINITI QX55 models.
• New oil filter – Choose an OEM or high-quality aftermarket filter for the best fit.
• Oil filter wrench – Helps remove and install the oil filter with ease.
• Socket wrench set – A 14mm or 17mm socket will work for most drain plugs.
• Oil catch pan – Use this to collect old oil and prevent spills.
• Funnel – Makes pouring new oil into the engine clean and simple.
• Gloves and safety glasses – Keep your hands clean and protect your eyes from oil splashes.
• Shop towels or rags – Wipe away spills and keep your workspace tidy.
• Jack and jack stands (or ramps) – Lift your vehicle safely to access the drain plug and filter.

Why These Tools Matter

Having the right tools ensures your change oil INFINITI QX55 2025 process goes smoothly. The oil filter wrench and socket set make removal easy. The oil catch pan keeps spills off your driveway. A funnel helps prevent messes when adding new oil. These small details make a big difference.

Once you have everything ready, it's time to prepare your QX55 for an oil change.

Draining the Old Oil from Your QX55

Draining the old oil is a key step in performing a QX55 DIY oil change. Fresh oil helps your engine run efficiently, while old oil can become dirty and less effective over time. By removing the old oil completely, you ensure that your 2025 INFINITI QX55 continues to perform at its best.

This process is straightforward, but it requires patience and the right technique. Follow these detailed steps to change the oil in your INFINITI QX55 (2025 model) the right way.

Step 1: Find the Oil Drain Plug

Before you can drain the oil, you need to find the oil drain plug. This small bolt is usually located on the bottom of the engine oil pan, underneath the vehicle. On the 2025 INFINITI QX55, it is typically positioned toward the front of the engine bay.

If you are unsure about the exact location, check your owner’s manual. Having this information ahead of time will make the process smoother.

Step 2: Get the Oil Catch Pan in Place

Once you’ve found the drain plug, the next step is to position an oil catch pan underneath it. This pan is essential because it will collect the old oil as it drains from the engine.

Here’s what to keep in mind:

• The pan should have at least a 5-quart capacity, as that is the typical oil volume in a QX55 oil replacement.
• Position the pan slightly behind the drain plug. Oil will flow out at an angle, so this ensures it lands in the pan instead of making a mess.
• If you’re working on a driveway or garage floor, place a tarp or cardboard sheet underneath to catch any stray drips.

Step 3: Loosen and Remove the Drain Plug

Now it’s time to remove the drain plug and let the old oil flow out. This step requires a socket wrench, usually 14mm or 17mm, depending on the exact bolt size of your QX55.

• Attach the socket wrench to the drain plug and turn counterclockwise to loosen it.
• Once the plug is loose, remove it by hand. Be prepared for a quick flow of oil as soon as the plug is removed.
• Let the oil drain completely into the catch pan. This can take several minutes, depending on how warm the oil is.

Tip: If the oil is draining slowly, you can remove the oil filler cap on top of the engine to allow air in, speeding up the process.

Step 4: Inspect the Drain Plug and Gasket

While the oil drains, take a moment to check the condition of the drain plug and its gasket. The gasket is a small rubber or metal ring that helps create a tight seal when the plug is in place.

Look for these signs of wear:

• Cracks or splits in the rubber gasket
• Flattened or worn edges on a metal gasket
• Stripped or damaged threads on the drain plug

If the gasket appears damaged, replace it before reinstalling the plug. Many auto parts stores sell replacement gasket kits specifically designed for INFINITI models.

Step 5: Reinstall the Drain Plug Securely

Once all the old oil has drained out, it’s time to put the drain plug back in place. This step is crucial—a loose drain plug can cause leaks, while over-tightening can damage the threads.

Follow these steps for a proper installation:

• Wipe the drain plug clean with a rag to remove any old oil or debris.
• If replacing the gasket, install the new one onto the drain plug before threading it back in.
• Hand-tighten the plug first to ensure it goes in smoothly.
• Use the socket wrench to tighten the plug, but do not overtighten. The owner’s manual will specify the correct torque setting, usually between 25-30 lb-ft.

Tip: If you do not have a torque wrench, tighten the plug firmly but stop as soon as you feel resistance. Over-tightening can strip the threads or crack the oil pan.

Step 6: Double-Check for Leaks

Before moving on, it’s always a good idea to check for any potential leaks around the drain plug area.

• Wipe the area clean with a rag.
• Look for any drips forming around the plug.
• If you see oil dripping, gently tighten the plug a bit more.

If everything looks good, you’re ready for the next step: installing the recommended oil for your INFINITI QX55 and a fresh oil filter. The engine is now empty of old oil and prepared for a full oil replacement.

Replacing the Oil Filter for Optimal Performance

An oil change isn’t complete without replacing the oil filter. The filter helps trap dirt, metal particles, and other contaminants that could damage your engine over time. A clean filter ensures your QX55 runs at peak efficiency, keeping your engine well-lubricated and free from harmful debris.

Replacing the oil filter during every INFINITI QX55 oil replacement is an easy but essential step. If you leave an old filter in place, it can clog and reduce oil flow, leading to premature engine wear. Whether you’re tackling a QX55 DIY oil change for the first time or you’ve done it before, this guide will walk you through the steps to get the job done right.

Step 1: Locate the Oil Filter

Before removing the old filter, you need to find it. The oil filter is usually positioned near the bottom of the engine, but the exact location can vary.

• Check your owner's manual for the specific placement.
• Use a flashlight to get a clear view if it's hard to see.
• Ensure the engine is cool before you begin.

A slightly warm engine allows oil to flow out smoothly, but touching hot components can be dangerous. Let the engine sit for at least 30 minutes after driving to avoid burns.

Step 2: Gather Your Tools

Having the right tools on hand will make this process easier. Before starting, gather the following:

• New oil filter (Make sure it’s the correct one for your vehicle.)
• Oil filter wrench (If the filter is on too tight, this tool will help.)
• Drain pan (To catch any oil that spills when removing the filter.)
• Shop rags or paper towels (For wiping away excess oil.)

Once everything is ready, move on to removing the old filter.

Step 3: Remove the Old Filter

This step can be messy, so position the drain pan under the oil filter to catch any remaining oil that may leak out.

• Loosen the filter by hand if possible. If it’s too tight, use an oil filter wrench.
• Turn counterclockwise to unscrew it slowly. Be careful, as some oil may spill out.
• Allow the oil to drain into the pan before completely removing the filter.
• Check the filter mounting area on the engine for any remaining rubber gasket pieces.

If the old gasket sticks to the engine, it can prevent the new filter from sealing properly, leading to leaks. Carefully wipe the mounting surface clean before installing the new filter.

Step 4: Prepare the New Filter

Before installing the new oil filter, take a moment to prepare it for proper sealing and performance.

• Apply a thin layer of fresh oil to the new filter’s rubber gasket. This helps create a good seal and makes removal easier during the next oil change.
• Double-check the size and thread type to ensure you’re using the right filter.
• Use only the recommended oil filter for your INFINITI QX55 to prevent leaks and ensure proper oil flow.

Taking this step helps protect your engine and extends the life of your QX55 DIY oil change results.

Step 5: Install the New Filter

Now it’s time to secure the new filter in place.

• Thread the filter on by hand until it makes firm contact with the engine.
• Tighten it another three-quarters of a turn using hand pressure.
• Avoid over-tightening, as this can damage the gasket and cause leaks.

Most oil filters will seal properly with firm hand pressure. If you must use a wrench, turn it only slightly—do not overtighten.

Step 6: Inspect for Leaks

Before moving on to refilling your engine with oil, take a few moments to check your work.

• Wipe away any excess oil around the filter area.
• Look for any signs of leakage at the base of the filter.
• Tighten slightly if needed, but avoid using excessive force.

Ensuring the new filter is properly installed will help prevent leaks and maintain strong oil pressure.

With the filter replaced, your INFINITI QX55 oil replacement is almost done. The next step is to add the recommended oil for the INFINITI QX55, check the oil level, and start the engine to ensure everything runs smoothly.

Adding Fresh Oil to Your INFINITI QX55

Once the oil filter has been replaced and the old oil has been drained, it's time to add fresh oil to your INFINITI QX55. Adding the right amount of recommended oil ensures that your engine is properly lubricated and ready for optimal performance.

Before you begin, make sure you've chosen the correct oil. For the INFINITI QX55 2025, the recommended oil is usually 5W-30 synthetic motor oil. Check your owner’s manual to confirm the exact specifications for your model.

Step 1: Locate the Oil Filler Cap

The oil filler cap is located on top of the engine. In most cases, it’s clearly labeled with an oil can symbol.

• Find the oil cap by opening the hood and locating it near the center of the engine.
• Remove the oil cap by twisting it counterclockwise.

This step is crucial for allowing air to escape as the oil enters the engine.

Step 2: Set Up Your Funnel

To avoid spills, place a funnel into the opening where the oil cap was. This will help guide the oil into the engine without making a mess.

• Choose a funnel with a narrow opening to ensure accuracy when pouring.
• Secure the funnel firmly to prevent it from tipping over while you add the oil.

Using a funnel ensures that the oil goes exactly where it’s needed and prevents contamination.

Step 3: Add Fresh Oil

With your funnel in place, it’s time to add the new oil.

• Pour the oil slowly into the funnel to avoid overflow.
• Add in small increments, checking the oil level with the dipstick to ensure you don’t overfill.

For a QX55 DIY oil change, your engine typically requires about 5 quarts of oil. However, always check your manual for the exact amount. Overfilling can lead to engine damage, so it’s better to add less at first and check the level before adding more.

Step 4: Replace the Oil Filler Cap

After the recommended amount of oil has been added, it’s important to secure the oil filler cap back into place.

• Hand-tighten the cap until it’s secure.
• Ensure there are no gaps around the cap to prevent leaks.
• This step ensures that no oil will escape during the engine’s operation.

Step 5: Check the Oil Level

Once the oil is added, it’s time to check the oil level and ensure it's within the proper range.

• Insert the dipstick back into its tube and pull it out.
• Wipe it clean with a rag or paper towel, then reinsert it fully.
• Pull it out again to check the oil level.

If the oil level is too low, add a little more and recheck. If it’s too high, you may need to drain a small amount.

Step 6: Inspect for Leaks

After adding the new oil, it’s a good idea to check for any leaks before starting the engine.

• Inspect around the oil filter and oil cap.
• Look underneath the car for any signs of oil drips.

If you notice a leak, double-check the filter and cap to ensure they’re tightened correctly.

With fresh oil added and the system sealed, your INFINITI QX55 oil replacement is complete. Next, start the engine to circulate the oil and ensure everything is working smoothly.

Checking Oil Levels and Inspecting for Leaks

After completing the oil change process, it's important to check the oil level and inspect for any potential leaks. This will ensure that everything is functioning properly and that your INFINITI QX55 is well-prepared for the road ahead.

Step 1: Check the Oil Level

It’s important to make sure the oil level is correct after adding the recommended oil. Here’s how to check it:

1. Start the Engine: Let the engine run for a few minutes. This helps the oil circulate throughout the system.
2. Turn Off the Engine: After the engine has been running, turn it off and wait for a couple of minutes to allow the oil to settle.
3. Locate the Dipstick: The dipstick is typically located near the front of the engine. It’s a long, thin rod, often with a brightly colored handle.
4. Pull Out the Dipstick: Remove the dipstick and wipe it clean with a rag or paper towel.
5. Reinsert the Dipstick: Insert it back into the tube completely.
6. Check the Oil Level: Pull it out again and look at the oil level. The dipstick will have markings indicating the minimum and maximum oil levels. The oil should fall between these marks.

• If the oil level is low, add more oil slowly, rechecking the level after each addition.
• If the level is too high, you may need to drain a small amount of oil.

Step 2: Inspect for Leaks

1. Checking for leaks is an important step to ensure your QX55 DIY oil change was done correctly and that no oil is escaping.
2. Check the Oil Filter: The oil filter should be securely tightened. If it is loose or improperly installed, oil may leak from the filter.
3. Inspect the Oil Filler Cap: Ensure the cap is tightly screwed on. A loose cap can cause oil to escape.
4. Look Under the Car: Check the area beneath the car for any visible signs of oil drips or puddles.
5. Examine the Engine Bay: Look around the oil filter and cap for any signs of oil residue.

If you notice any leaks, address them immediately by tightening the oil filter or oil filler cap. If the leak persists, the parts may need to be replaced.

Final Steps

After checking the oil level and inspecting for leaks, you can now safely start your INFINITI QX55 and take it for a short drive. Afterward, recheck the oil level once again to ensure it’s still within the proper range. Regular oil checks will help maintain the health of your engine and ensure long-lasting performance.

Frequently Asked Questions About Changing Oil in Your INFINITI QX55

Which oil filter brand does INFINITI recommend for the QX55?

INFINITI recommends using OEM (Original Equipment Manufacturer) filters for your QX55, specifically the INFINITI genuine oil filter. This ensures proper fitment and optimal engine protection.

How do driving conditions (extreme heat/cold) affect the QX55’s oil change schedule?

Extreme temperatures can affect how frequently you need to change your oil. In hot climates, oil degrades faster due to high engine temperatures, while in cold climates, the oil may thicken, impacting circulation. INFINITI QX55 owners in extreme conditions should consider changing the oil more often—typically every 3,000 to 5,000 miles, as opposed to the standard 7,500 to 10,000 miles in moderate climates.

What steps are required to remove any protective undercarriage panels?

To remove protective undercarriage panels on the INFINITI QX55, follow these steps:

1. Lift the vehicle using a jack and secure it with jack stands.
2. Locate the fasteners securing the undercarriage panel (usually screws or bolts).
3. Use the appropriate tools (screwdriver or wrench) to remove the fasteners.
4. Gently remove the panel from the undercarriage area.

Can I mix synthetic and conventional oil if I’m in a pinch?

While it is possible to mix synthetic and conventional oils, it is not recommended. Mixing oils can cause inconsistencies in oil performance, and it may reduce the overall effectiveness of your oil change. It’s always best to use one type of oil for consistency and performance. If you’re in a pinch, make sure the oils you mix are the same viscosity.

How do I properly dispose of the old oil and filter once I’m done?

Old oil and filters must be disposed of properly to protect the environment. Here’s how to do it:

1. Take the used oil to an auto parts store or recycling center that accepts used motor oil.
2. Make sure the oil filter is drained of excess oil and placed in a sealed plastic bag or container.
3. Check local regulations for specific disposal locations, as many recycling centers offer free oil disposal services.

With these answers, you’ll be better prepared to perform a QX55 DIY oil change safely and properly, keeping your vehicle running smoothly for years to come. If you need further assistance or have additional questions, don’t hesitate to reach out to your local INFINITI dealership.

Explore Your 2025 INFINITI QX55 and More at Infiniti of Escondido

Now that you know how to change the oil in your 2025 INFINITI QX55, it’s time to keep your vehicle running smoothly. If you ever need assistance or have questions about maintenance, don’t hesitate to contact Infiniti of Escondido. Our team is always ready to help!

For those looking to upgrade their ride, we invite you to explore our wide selection of vehicles, including the stylish and efficient QX55. Whether you're looking for a new or pre-owned vehicle, we have something for everyone.

While you're here, don’t forget to check out our other helpful resources. If you’re curious about the performance and specs of the 2025 INFINITI QX80, we’ve got all the details, if you're in search of a family-friendly vehicle, take a look at the 6 reasons why the 2025 INFINITI QX60 is the standout choice for families or Changing Oil in QX80.

Visit Infiniti of Escondido to learn more and explore your options today!