Hey guys! Changing your oil is one of the most important things you can do to keep your 2018 Nissan Altima SR running smoothly. It might seem intimidating, but it's actually a pretty straightforward process you can totally handle yourself. Doing it yourself saves you money and gives you a better understanding of your car. This guide breaks down each step, making it easy to follow, even if you're not a seasoned mechanic. We'll cover everything from gathering your supplies to safely disposing of the old oil. So, grab your tools, and let's get started!

Gathering Your Supplies

Before diving in, you'll need to gather all the necessary supplies to ensure a smooth and efficient oil change. This includes the correct type and amount of engine oil recommended for your 2018 Nissan Altima SR. Typically, you'll need about 5 quarts of 0W-20 synthetic oil, but always double-check your owner's manual for the exact specification. You'll also need a new oil filter that's compatible with your car. A genuine Nissan oil filter or a high-quality aftermarket filter from a reputable brand is recommended. Other essential items include an oil filter wrench to remove the old filter, a wrench for the oil drain plug (usually 14mm or 17mm), a drain pan to catch the old oil, a funnel to pour in the new oil, gloves to keep your hands clean, and some shop towels to wipe up any spills. Safety glasses are also a good idea to protect your eyes. Additionally, consider having wheel ramps or a jack and jack stands to safely elevate your car, providing better access to the oil drain plug and filter. With all your supplies ready, you'll be well-prepared to tackle the oil change with confidence.

Having the right tools and materials on hand isn't just about convenience; it's about ensuring the job is done correctly and safely. Using the correct type of oil and filter is crucial for maintaining your engine's performance and longevity. The oil lubricates the engine's internal components, reduces friction, and helps to dissipate heat. Using the wrong type of oil can lead to increased wear and tear, reduced fuel efficiency, and even engine damage. Similarly, a high-quality oil filter is designed to trap contaminants and prevent them from circulating through the engine. A cheap or poorly made filter may not effectively remove these particles, which can also lead to engine damage. So, investing in the right supplies is an investment in the health and performance of your vehicle. Remember, always refer to your owner's manual for the specific recommendations for your 2018 Nissan Altima SR. This will ensure you're using the correct oil type, filter, and drain plug torque specifications. Taking the time to gather the right supplies is a small effort that can save you a lot of headaches and money in the long run.

Preparing Your 2018 Nissan Altima SR

First things first, make sure your 2018 Nissan Altima SR is parked on a level surface. Engage the parking brake for added safety. Now, you'll need to lift the car to access the oil drain plug and filter. You can use either wheel ramps or a jack and jack stands. If using a jack, consult your owner's manual for the correct jacking points to avoid damaging the vehicle's frame. Once the car is safely lifted and supported, give it a little shake to ensure it's stable before you start working underneath. Next, locate the oil drain plug on the bottom of the oil pan. It's usually a large bolt. Also, find the oil filter, which is typically located near the front of the engine. With everything accessible, you're ready to drain the old oil.

Before you even think about loosening that drain plug, a little prep work goes a long way. Warm up the engine for a few minutes. This helps the oil flow more easily, carrying away more contaminants. But don't let it get too hot – you don't want to burn yourself! After warming it up, turn off the engine. Now, position your drain pan beneath the oil drain plug. Make sure it's large enough to hold all the old oil, which is usually around 5 quarts for your Altima SR. Having everything set up and ready to go will prevent spills and make the whole process much cleaner. Also, consider wearing gloves to protect your hands from the grime and used oil. Trust me, you'll thank yourself later! Taking these extra steps ensures a smoother and safer oil change experience. It's all about being prepared and thinking ahead. A little bit of planning can save you a lot of time and frustration.

Draining the Old Oil

Okay, now for the messy part – draining the old oil. Place your drain pan directly under the oil drain plug. Use the correct size wrench to loosen the drain plug. Once it's loose, carefully unscrew it by hand. Be prepared for the oil to come out quickly! Let the oil drain completely, which usually takes about 15-20 minutes. While the oil is draining, you can move on to removing the old oil filter. Use your oil filter wrench to loosen the filter. You might want to have a rag handy to catch any oil that spills when you remove the filter. Once the oil has completely drained, clean the drain plug and install a new crush washer. Then, tighten the drain plug to the manufacturer's specified torque. This is important to prevent leaks. Consult your owner's manual for the correct torque specification.

While you're waiting for the oil to drain, take a good look at the old oil itself. Its color and consistency can tell you a lot about the health of your engine. Ideally, the oil should be dark brown or black, but not sludgy or gritty. If you notice any metal shavings or other unusual particles in the oil, it could be a sign of engine wear. In that case, it's a good idea to have your engine inspected by a professional mechanic. Also, be careful when handling the old oil. It's considered hazardous waste and should be disposed of properly. Most auto parts stores will accept used oil for recycling. Don't just dump it down the drain or into the trash! You're an eco-conscious car owner, right? Once the oil is fully drained, take the time to thoroughly clean the area around the drain plug. This will help you spot any future leaks more easily. Remember, attention to detail is key when it comes to car maintenance. A clean workspace is a happy workspace!

Installing the New Oil Filter

Before installing the new oil filter, lightly lubricate the rubber gasket on the new filter with fresh oil. This helps create a good seal. Screw the new filter onto the engine by hand until it's snug. Then, tighten it an additional half to three-quarters of a turn, or according to the manufacturer's instructions. Do not overtighten the filter, as this can damage the gasket and cause leaks. Make sure the filter is securely in place, but not excessively tight. With the new filter installed, you're ready to add the fresh oil.

Choosing the right oil filter is just as important as choosing the right engine oil. A high-quality oil filter will effectively remove contaminants and protect your engine from wear. Consider using a genuine Nissan oil filter or a reputable aftermarket brand. Avoid cheap or generic filters, as they may not provide adequate filtration. When installing the new filter, make sure the mounting surface on the engine is clean and free of any debris. This will ensure a proper seal. Also, double-check that the old filter's gasket has been removed. Sometimes, the old gasket can stick to the engine, which can cause leaks if you install the new filter on top of it. A little bit of extra attention during the installation process can prevent a lot of headaches down the road. Remember, the oil filter is your engine's first line of defense against harmful contaminants. Investing in a good filter and installing it correctly is a smart way to protect your engine and extend its lifespan.

Adding the New Oil

Now for the rewarding part – adding the fresh, clean oil! Open the hood of your 2018 Nissan Altima SR and locate the oil filler cap. It usually has an oil can symbol on it. Remove the cap and insert a funnel into the filler neck. Pour in the recommended amount of oil, typically around 5 quarts for your Altima SR, but always double-check your owner's manual. After adding the oil, replace the filler cap and start the engine. Let it run for a few minutes, then check the oil level using the dipstick. If the level is low, add more oil as needed. Be careful not to overfill the engine, as this can also cause problems. Once the oil level is correct, you're good to go!

When adding the new oil, it's always best to start with slightly less than the recommended amount. You can always add more, but it's difficult to remove excess oil. After adding the initial amount, wait a few minutes for the oil to settle before checking the dipstick. The dipstick usually has markings to indicate the minimum and maximum oil levels. The oil level should be between these two marks. If the level is below the minimum mark, add more oil in small increments until it reaches the correct level. If you accidentally overfill the engine, you can try to drain some of the excess oil using the drain plug. However, this can be a messy process, so it's best to avoid overfilling in the first place. Also, be sure to use the correct type of oil recommended for your 2018 Nissan Altima SR. Using the wrong type of oil can affect your engine's performance and longevity. Consult your owner's manual for the specific oil requirements for your vehicle. Adding the fresh oil is the final step in the oil change process. With the new oil in place, your engine will be well-lubricated and protected from wear.

Checking for Leaks and Finalizing

After completing the oil change, it's important to check for any leaks around the drain plug and oil filter. Let the engine run for a few minutes and inspect these areas carefully. If you see any signs of leakage, tighten the drain plug or oil filter as needed. However, be careful not to overtighten them, as this can damage the threads or gasket. Once you're satisfied that there are no leaks, turn off the engine and lower your 2018 Nissan Altima SR. Finally, reset the oil life monitoring system in your car. Consult your owner's manual for instructions on how to do this. This will ensure that you're reminded to change the oil again at the appropriate interval.

Before you pat yourself on the back and call it a day, there are a few more things to take care of. First, properly dispose of the used oil and oil filter. Most auto parts stores will accept used oil for recycling. They may also accept used oil filters, or you may need to dispose of them separately. Do not dump the used oil down the drain or into the trash! This is harmful to the environment. Also, make sure to clean up any spills or messes that you may have made during the oil change. A clean workspace is a safe workspace. Finally, take your car for a short test drive to ensure that everything is working properly. Listen for any unusual noises or vibrations. If you notice anything out of the ordinary, have your car inspected by a professional mechanic. With these final steps completed, you can rest assured that you've successfully changed the oil in your 2018 Nissan Altima SR and that your engine is running smoothly.

Congratulations!

You've successfully changed the oil in your 2018 Nissan Altima SR! Give yourself a pat on the back. You've saved money, learned something new, and helped keep your car running smoothly. Now you can confidently tackle your next oil change. Keep up the great work!