2018 Nissan Sentra Oil Change

Alright, let's get down to business and walk through an oil change on your 2018 Nissan Sentra. Changing your oil regularly is absolutely crucial for maintaining engine health and longevity. This guide assumes you have some experience working on cars and are comfortable with basic hand tools. If not, it's always best to consult a qualified mechanic.

Preparation is Key

Before you even think about touching a wrench, you need to gather your supplies. Having everything on hand will make the process smoother and less frustrating.

Required Materials:

New Oil: The 2018 Nissan Sentra typically requires 3.7 quarts of 0W-20 or 5W-30 synthetic oil. Always consult your owner's manual for the exact specification. Using the wrong oil viscosity can negatively impact engine performance and fuel economy.
New Oil Filter: Use a quality oil filter designed for your Sentra. A part number that often works is a Purolator PL14610, Fram PH7317, or equivalent from other reputable brands like Mobil 1 or K&N. Don't cheap out on the filter; it's essential for removing contaminants from the oil.
Oil Filter Wrench: These come in various styles (cap-type, strap-type, claw-type). Choose one that fits your filter and provides good leverage.
Socket Wrench and Socket: You'll need the correct size socket to remove the oil drain plug. This is usually a 14mm socket, but it's always a good idea to double-check.
Drain Pan: A container large enough to hold all the used oil.
Funnel: For pouring the new oil into the engine without spilling.
Gloves: Protect your hands from the dirty oil.
Rags or Shop Towels: For cleaning up spills.
Jack and Jack Stands: Never work under a vehicle supported only by a jack. Jack stands are essential for safety.
Wheel Chocks: To prevent the car from rolling.
Torque Wrench: For tightening the drain plug to the proper specification. This is crucial to avoid leaks or damaging the oil pan.
Owner's Manual: Your best friend. Refer to it for specific torque specs and oil capacity.

Safety First!

Before you even think about getting under the car, safety is paramount. Park your Sentra on a level surface. Engage the parking brake and chock the rear wheels. Let the engine cool down for at least 30 minutes before starting, as the oil and exhaust components will be very hot.

The Oil Change Procedure

Now that you're prepared and have taken the necessary safety precautions, let's get to the oil change itself.

Raise the Vehicle: Use your jack to lift the front of the car. Place the jack stands securely under the vehicle's frame rails, behind the front wheels. Never place jack stands directly on the pinch welds, as they can bend easily. Lower the vehicle onto the jack stands, ensuring it is stable. Give the car a good shake to make sure it's secure before getting underneath.
Locate the Oil Drain Plug: Crawl underneath the car and locate the oil pan. The drain plug is usually the lowest point on the oil pan.
Position the Drain Pan: Place the drain pan directly underneath the drain plug.
Remove the Drain Plug: Using your socket wrench, carefully loosen and remove the drain plug. Be prepared for the oil to gush out. Let the oil drain completely, which usually takes about 15-20 minutes. While the oil is draining, you can move on to the next step.
Locate and Remove the Oil Filter: The oil filter on the 2018 Sentra is typically located on the front of the engine, near the exhaust manifold. Use your oil filter wrench to loosen the old filter. Have a rag handy to catch any spilled oil. Once loose, unscrew the filter by hand. Note the position of the rubber seal on the old filter; you'll need to ensure the new filter seals properly.
Prepare the New Oil Filter: Before installing the new filter, lightly lubricate the rubber gasket with fresh oil. This will ensure a good seal and prevent the gasket from tearing during installation.
Install the New Oil Filter: Screw the new oil filter onto the engine by hand until the gasket makes contact with the engine. Then, tighten it an additional 3/4 to 1 full turn, according to the filter manufacturer's instructions. Avoid overtightening, as this can damage the filter or the engine.
Reinstall the Drain Plug: Once the oil has completely drained, clean the drain plug and inspect the drain plug gasket (also known as a crush washer). If the gasket is damaged or worn, replace it. Position the drain plug with the gasket and tighten the drain plug to the manufacturer's recommended torque specification. This is typically around 25-30 ft-lbs, but always refer to your owner's manual for the exact value. Using a torque wrench is crucial here; overtightening can strip the threads in the oil pan, leading to expensive repairs.
Lower the Vehicle: Carefully raise the car with the jack again, remove the jack stands, and lower the vehicle to the ground.
Add New Oil: Locate the oil filler cap on top of the engine. Remove the cap and insert the funnel. Pour in the specified amount of new oil (approximately 3.7 quarts). Always double-check the owner's manual for the exact capacity.
Check the Oil Level: Remove the dipstick, wipe it clean, reinsert it fully, and then remove it again to check the oil level. The oil level should be between the "min" and "max" marks on the dipstick. Add more oil if necessary to reach the correct level.
Start the Engine: Start the engine and let it run for a few minutes. Check for any leaks around the drain plug and oil filter. If you see any leaks, immediately shut off the engine and address the problem.
Final Oil Level Check: After the engine has run for a few minutes, turn it off and let it sit for a few minutes to allow the oil to settle. Recheck the oil level with the dipstick and add more oil if needed.
Reset the Oil Life Monitor: Refer to your owner's manual for instructions on how to reset the oil life monitor in your 2018 Sentra. This is important to ensure that you receive timely reminders for future oil changes.

Disposing of Used Oil

Used oil is a hazardous waste and should be disposed of properly. Never pour it down the drain or onto the ground. Most auto parts stores and service stations will accept used oil for recycling. Check with your local regulations for proper disposal methods.

Common Mistakes to Avoid

Using the Wrong Oil: Using the wrong oil viscosity can damage your engine. Always check your owner's manual for the correct specification.
Overtightening the Drain Plug or Oil Filter: Overtightening can strip threads and damage components. Use a torque wrench for the drain plug and follow the filter manufacturer's instructions for tightening the oil filter.
Forgetting to Lubricate the Oil Filter Gasket: Lubricating the gasket ensures a good seal and prevents tearing.
Failing to Check for Leaks: Always check for leaks after starting the engine.
Improper Disposal of Used Oil: Dispose of used oil responsibly to protect the environment.
Working Under a Car Supported Only by a Jack: This is extremely dangerous. Always use jack stands.

Troubleshooting

Oil Leak After Oil Change:
Possible causes include:
- Loose drain plug
- Damaged drain plug gasket
- Loose oil filter
- Damaged oil filter gasket
Solution: Tighten the drain plug or oil filter. Replace the gasket if damaged.
Difficulty Removing the Oil Filter:
Solution: Make sure you're using the correct size oil filter wrench. Try tapping the wrench with a hammer to help loosen the filter. If all else fails, you can try piercing the filter with a screwdriver and using it for leverage (be very careful).

Final Thoughts

Changing your own oil is a relatively simple task that can save you money and give you a better understanding of your car. By following these steps and taking the necessary precautions, you can keep your 2018 Nissan Sentra running smoothly for years to come. Remember, if you're ever unsure about any part of the process, it's always best to consult a qualified mechanic.

Disclaimer: This guide is for informational purposes only. I am not responsible for any damage or injury that may occur as a result of following these instructions. Always consult your owner's manual and use caution when working on your car.