2018 Nissan Altima SR: DIY Oil Change Guide

Nov 13, 2025 by Alex Braham 44 views

Hey guys! So, you're looking to tackle an oil change on your 2018 Nissan Altima SR? Awesome! Doing it yourself can save you some cash and give you that satisfying feeling of taking care of your ride. This guide will walk you through everything you need to know, from the tools required to the step-by-step process. Let's dive in!

Why Change Your Oil?

Before we get our hands dirty, let's quickly touch on why changing your oil is so crucial. Your engine's oil is like its lifeblood. Engine oil keeps all the moving parts lubricated, preventing friction and wear. Over time, oil breaks down, gets contaminated with dirt and debris, and loses its ability to do its job effectively. Dirty oil can lead to:

Increased engine wear
Reduced fuel efficiency
Overheating
Potential engine damage (the horror!)

Sticking to a regular oil change schedule is the easiest and most effective way to keep your Altima's engine purring like a kitten (or roaring like a lion, depending on your driving style!). For a 2018 Nissan Altima SR, the recommended oil change interval is typically around 5,000 miles or every six months, but always double-check your owner's manual for the manufacturer's specific recommendations. Factors like driving conditions (stop-and-go traffic, extreme temperatures) can also influence how often you need to change your oil. If you do a lot of city driving or live in a dusty area, you might want to shorten the interval. Keeping detailed records of your maintenance, including oil changes, is always a smart move. This can be helpful for tracking your car's health and can also increase its resale value down the road. Plus, it gives you peace of mind knowing you're taking good care of your investment. So, whether you're a seasoned DIYer or a first-timer, changing your oil is a manageable task that can save you money and keep your Altima running smoothly for years to come. Don't be intimidated – with a little preparation and the right tools, you'll be a pro in no time!

What You'll Need: Gathering Your Supplies

Okay, so let's get down to the nitty-gritty. Before you even think about crawling under your car, make sure you have everything you need. Nothing's worse than getting halfway through the job and realizing you're missing a crucial tool! Here's your checklist:

New Oil: This is kinda important! Check your owner's manual for the correct type and amount. For the 2018 Altima SR with the 2.5L engine, you'll likely need around 4.8 quarts of 0W-20 synthetic oil. Always opt for a high-quality oil that meets or exceeds Nissan's specifications. Synthetic oil generally offers better protection and longer intervals between changes compared to conventional oil. Some popular brands include Mobil 1, Castrol, and Pennzoil. Read reviews and compare prices to find the best option for your budget and driving needs. Remember, your engine is a complex machine, and using the right oil is crucial for its longevity. Don't skimp on this – it's an investment in your car's future! Also, make sure to check the oil's API (American Petroleum Institute) rating. Look for an oil that meets or exceeds the API SN or SP standard, which indicates it's designed for modern engines.
New Oil Filter: Again, a must-have. Use the correct filter for your Altima SR – a Fram PH7317 or equivalent will usually do the trick. Using the correct oil filter is just as important as using the right oil. The oil filter's job is to trap dirt and debris, preventing them from circulating through your engine. A clogged or inadequate oil filter can reduce oil flow and increase engine wear. Always replace the oil filter with every oil change to ensure optimal engine protection. There are many different brands and types of oil filters available, ranging from basic to premium. Some filters offer better filtration efficiency or longer service life. Consider your driving habits and budget when choosing an oil filter. If you do a lot of highway driving, a premium filter might be a worthwhile investment. Research different brands and read reviews to find the best filter for your needs.
Wrench: To remove the oil drain plug. A 14mm wrench usually works for the Altima SR. A good set of wrenches is essential for any DIY mechanic. Make sure you have a wrench that fits the oil drain plug snugly to avoid rounding it off. Using the wrong size wrench can damage the plug, making it difficult to remove in the future. Consider investing in a set of combination wrenches, which have an open-end wrench on one side and a box-end wrench on the other. Box-end wrenches are less likely to slip and damage fasteners. If you're working in a tight space, a ratcheting wrench can be a lifesaver. These wrenches allow you to tighten or loosen bolts without having to remove the wrench and reposition it.
Oil Filter Wrench: To remove the old oil filter. These come in various styles, so pick one that works for you. Oil filter wrenches are designed to grip the oil filter securely without damaging it. There are several different types of oil filter wrenches available, including cap-type wrenches, strap wrenches, and claw-type wrenches. Cap-type wrenches fit over the end of the oil filter and are turned with a wrench or socket. Strap wrenches use a strap to grip the oil filter. Claw-type wrenches have jaws that grip the filter. Choose the type of wrench that you find most comfortable and easy to use. Make sure the wrench is the correct size for your oil filter. If the wrench is too small, it won't grip the filter properly. If it's too large, it might slip and damage the filter.
Drain Pan: To catch the old oil. A wide, shallow pan is ideal. A good drain pan is essential for preventing oil spills. Choose a pan that is large enough to hold all of the oil from your engine. A wide, shallow pan is easier to position under the drain plug. Look for a pan with a spout or handle for easy pouring. Some drain pans have built-in screens to catch debris. Avoid using a flimsy or leaky drain pan, as this can create a mess and potentially damage the environment. Always dispose of used oil properly at a designated recycling center.
Funnel: To pour the new oil in without making a mess. Funnels are inexpensive and can save you a lot of headaches. A funnel is a simple but essential tool for adding oil to your engine. Choose a funnel that is the right size for your oil filler neck. A funnel with a long spout can help you reach the filler neck more easily. Make sure the funnel is clean and free of debris. A dirty funnel can contaminate your new oil. Consider using a funnel with a screen to filter out any particles. After you're finished, clean the funnel thoroughly and store it in a safe place.
Rags or Shop Towels: For wiping up spills. You'll definitely need these! Rags or shop towels are essential for cleaning up spills and wiping down parts. Keep a stack of rags handy while you're working on your car. Avoid using paper towels, as they can leave behind lint. Shop towels are more durable and absorbent than rags. Consider using disposable shop towels for messy jobs. Always dispose of used rags and shop towels properly.
Gloves: To keep your hands clean. Trust me, you'll thank me later. Gloves are a must-have for protecting your hands from dirt, grime, and chemicals. Disposable gloves are convenient and inexpensive. Nitrile gloves offer better protection than latex gloves. Consider using mechanic's gloves, which are designed to provide a good grip and protect your hands from abrasion. Always choose gloves that fit properly. Gloves that are too large can be clumsy to work with. Gloves that are too small can be uncomfortable and restrict your movement.
Jack and Jack Stands (or Ramps): To safely lift your car. Safety first! Never work under a car supported only by a jack. Jack stands are crucial for safety. Always use jack stands when working under a vehicle. Never rely solely on a jack to support the weight of your car. Jack stands are designed to hold the weight of your car safely and securely. Choose jack stands that are rated for the weight of your vehicle. Make sure the jack stands are placed on a level surface. Position the jack stands under the vehicle's frame or designated jacking points. Lower the vehicle onto the jack stands slowly and carefully. Before you start working, give the car a good shake to make sure it's stable. If you're using ramps, make sure they are properly aligned and secured. Drive slowly and carefully onto the ramps. Once the car is on the ramps, engage the parking brake and chock the rear wheels.

Step-by-Step: Changing Your Oil

Alright, you've got all your gear. Let's get this oil changed!

Warm-Up: Start your engine for a few minutes (2-3 minutes max) to warm the oil. Warm oil flows easier, but be careful not to get it too hot! You want it lukewarm, not scalding. Warming the oil helps to suspend any contaminants that have settled at the bottom of the oil pan. This will allow them to be drained out with the old oil. However, it's important not to warm the oil too much, as hot oil can be dangerous to handle. A few minutes of idling is usually sufficient.
Secure Your Ride: Safely lift your Altima using a jack and secure it with jack stands (or drive it onto ramps). Safety is paramount! Make sure the car is stable before you even think about crawling underneath. Double-check that the jack stands are properly positioned and locked in place. Give the car a good shake to make sure it's stable. If you're using ramps, make sure they are properly aligned and secured. Engage the parking brake and chock the rear wheels for added safety.
Locate the Drain Plug: Crawl under your car and find the oil drain plug. It's usually on the bottom of the oil pan. The oil pan is typically located at the bottom of the engine. The drain plug is a bolt that is screwed into the bottom of the oil pan. It's usually the lowest point on the engine. If you're having trouble finding the drain plug, consult your owner's manual or a repair manual. Make sure you have the correct size wrench before you start loosening the drain plug. Using the wrong size wrench can damage the plug.
Drain the Old Oil: Position your drain pan under the drain plug. Use your wrench to loosen the plug, and then carefully unscrew it by hand. Be prepared for the oil to come out quickly! Let it drain completely. Once the oil starts draining, be careful not to touch the hot exhaust pipes. The oil will be hot, so wear gloves to protect your hands. Let the oil drain completely before proceeding to the next step. This may take 15-20 minutes. You can speed up the process by removing the oil filler cap on top of the engine. This will allow air to flow into the engine and help the oil drain more quickly.
Remove the Old Filter: While the oil is draining, locate and remove the old oil filter. Use your oil filter wrench to loosen it, and then unscrew it by hand. Be careful, as there will be some oil in the filter! Hold the filter upright as you remove it to minimize spills. Before installing the new filter, wipe the mounting surface on the engine with a clean rag. This will ensure a good seal. Dispose of the old oil filter properly at a designated recycling center.
Install the New Filter: Lightly lubricate the rubber gasket on the new oil filter with fresh oil. This will help it seal properly. Screw the new filter on by hand until the gasket makes contact with the engine. Then, tighten it an additional 3/4 turn. Don't overtighten it! Overtightening the oil filter can damage the gasket and cause leaks. If you're not sure how tight to make it, consult the instructions on the oil filter box. Make sure the oil filter is clean and free of debris before installing it.
Reinstall the Drain Plug: Once the oil has completely drained, clean the drain plug and install a new crush washer (if applicable). Screw the drain plug back in by hand, and then tighten it with your wrench to the manufacturer's specified torque. Don't overtighten it! Overtightening the drain plug can damage the threads in the oil pan. If you're not sure how tight to make it, consult your owner's manual or a repair manual. Make sure the drain plug is clean and free of debris before installing it.
Add New Oil: Remove the oil filler cap on top of the engine. Use your funnel to pour in the correct amount of new oil, as specified in your owner's manual. Don't overfill it! Overfilling the engine with oil can damage the engine. Check the oil level with the dipstick after adding the oil. Add more oil if necessary to bring the level up to the full mark. Use a high-quality oil that meets or exceeds Nissan's specifications. Synthetic oil generally offers better protection and longer intervals between changes compared to conventional oil. Some popular brands include Mobil 1, Castrol, and Pennzoil. Read reviews and compare prices to find the best option for your budget and driving needs.
Check the Oil Level: Replace the oil filler cap and start the engine. Let it run for a few minutes, and then check the oil level again with the dipstick. Add more oil if needed to bring the level up to the full mark. Be sure to check for any leaks around the drain plug and oil filter. If you see any leaks, tighten the drain plug or oil filter as needed. Keep an eye on the oil level for the next few days to make sure there are no leaks.
Lower Your Car: Carefully lower your Altima back to the ground. Remove the jack stands or drive the car off the ramps. Once the car is back on the ground, double-check the oil level one last time. This will ensure that the reading is accurate. Add more oil if necessary to bring the level up to the full mark.
Dispose of Old Oil Properly: Take your used oil and filter to a recycling center. Never dump it down the drain or into the ground! Used oil is a hazardous waste and can contaminate the environment. Most auto parts stores and service stations will accept used oil for recycling. Dispose of the old oil filter properly as well.

Congrats, You Did It!

Give yourself a pat on the back! You've successfully changed the oil in your 2018 Nissan Altima SR. Regular oil changes will keep your engine running smoothly for years to come. And you saved some money doing it yourself! Now go enjoy that freshly oiled ride!

Disclaimer: This guide is for informational purposes only. Always consult your owner's manual and follow all safety precautions when working on your vehicle. If you're not comfortable performing this task yourself, it's best to take your car to a qualified mechanic.