Hey guys! Changing your oil is one of the most important things you can do to keep your ride running smoothly, and the 2018 Subaru Impreza is no exception. In this guide, we'll walk you through everything you need to know to perform a successful oil change on your Impreza, saving you money and ensuring your engine stays in top shape. So, grab your tools, and let's get started!

Why is an Oil Change Important for Your 2018 Subaru Impreza?

Your 2018 Subaru Impreza's engine is a complex machine with many moving parts. These parts create friction and heat as they operate. Oil acts as a lubricant, reducing friction and preventing excessive wear and tear. Over time, oil breaks down, becomes contaminated with dirt and debris, and loses its ability to effectively protect your engine. This is why regular oil changes are crucial.

• Lubrication: Fresh oil ensures that all engine components are properly lubricated, reducing friction and wear. Without proper lubrication, parts can grind against each other, leading to significant damage and costly repairs.
• Cooling: Oil also helps to dissipate heat from the engine. As it circulates, it absorbs heat and carries it away, preventing the engine from overheating. Old, degraded oil is less effective at cooling, which can lead to higher engine temperatures and potential damage.
• Cleaning: Oil contains detergents and dispersants that help to clean the engine by suspending dirt, debris, and contaminants. These particles are then trapped by the oil filter, preventing them from circulating and causing damage. Over time, the oil becomes saturated with these contaminants, reducing its cleaning ability.
• Protection: Fresh oil forms a protective barrier between engine components, preventing corrosion and the buildup of sludge and varnish. This helps to maintain the engine's efficiency and prolong its lifespan. Regular oil changes ensure that this protective barrier is always in place.
• Performance: A well-lubricated and clean engine runs more efficiently, providing better fuel economy and performance. Regular oil changes help to maintain the engine's optimal operating condition, ensuring that you get the most out of your 2018 Subaru Impreza.

Ignoring regular oil changes can lead to serious consequences. The engine may overheat, parts can wear out prematurely, and sludge buildup can restrict oil flow, leading to catastrophic engine failure. By staying on top of your oil changes, you can avoid these problems and keep your Impreza running smoothly for years to come. Always check your owner's manual for the manufacturer's recommended oil change intervals and follow their guidelines for the best results. Keeping detailed records of your maintenance, including oil changes, can also help maintain your car's value and provide peace of mind.

What You'll Need

Before you dive into the oil change, gather all the necessary supplies and tools. Having everything on hand will make the process smoother and more efficient. Here's a comprehensive list of what you'll need:

• New Oil: Refer to your 2018 Subaru Impreza owner's manual to determine the correct type and amount of oil. Subaru typically recommends synthetic oil, such as 0W-20, for the 2018 Impreza. The quantity needed is usually around 5 quarts, but double-check your manual to be sure. Using the right type and amount of oil is crucial for maintaining your engine's performance and longevity.
• New Oil Filter: Use a high-quality oil filter that is specifically designed for your 2018 Subaru Impreza. A good oil filter will effectively remove contaminants from the oil, protecting your engine from wear. Check your owner's manual or a reputable auto parts store to find the correct oil filter for your vehicle.
• Wrench for the Oil Filter: You'll need a specialized wrench to remove and install the oil filter. The size and type of wrench will depend on the specific oil filter you are using. An oil filter wrench will provide a secure grip and make it easier to loosen and tighten the filter.
• Wrench for the Drain Plug: A wrench is needed to remove the oil drain plug. The size of the wrench will vary, so consult your owner's manual or use a socket set to find the correct size. Make sure the wrench fits snugly to avoid stripping the drain plug.
• Drain Pan: Place a drain pan under the drain plug to catch the old oil. Choose a drain pan with a large capacity to prevent spills. A drain pan with a spout will make it easier to pour the used oil into a recycling container.
• Funnel: Use a funnel to pour the new oil into the engine. This will help prevent spills and ensure that the oil goes directly into the oil fill opening.
• Gloves: Protect your hands from dirt and oil by wearing gloves. Nitrile gloves are a good choice because they are resistant to oil and chemicals.
• Rags or Shop Towels: Keep rags or shop towels handy to wipe up any spills and clean your hands and tools. Cloth rags are reusable and environmentally friendly, while shop towels are disposable and convenient.
• Jack and Jack Stands (or Ramps): You'll need to lift your car to access the oil drain plug. Use a jack and jack stands for safety, or drive your car onto ramps. Always use jack stands to support the vehicle before working underneath it.
• Wheel Chocks: Place wheel chocks behind the rear wheels to prevent the car from rolling while you're working on it. This is an important safety precaution.
• Torque Wrench: A torque wrench is essential for tightening the drain plug and oil filter to the correct torque specifications. This will prevent leaks and ensure that the components are properly secured. Consult your owner's manual for the correct torque specifications.

Having all of these items ready before you start will make the oil change process much smoother and safer. Always double-check that you have the correct parts and tools for your 2018 Subaru Impreza to avoid any issues during the oil change.

Step-by-Step Guide to Changing Your Oil

Okay, let's get down to business! Here's a step-by-step guide to changing the oil in your 2018 Subaru Impreza. Follow these instructions carefully to ensure a safe and successful oil change.

1. Prepare Your Car:

   • Park your Impreza on a level surface. This is important to ensure that all the old oil drains out completely.
   • Engage the parking brake and place wheel chocks behind the rear wheels for added safety.
   • Allow the engine to cool down slightly. You don't want to burn yourself on hot engine parts.

2. Raise the Vehicle:

   • Use a jack to lift the front of your car. Place jack stands securely under the vehicle's frame rails. Never work under a car supported only by a jack. Alternatively, you can use ramps to raise the front of the car.

3. Locate the Oil Drain Plug:

   • Crawl under the car and locate the oil drain plug on the bottom of the engine's oil pan. It's usually a large bolt.

4. Drain the Old Oil:

   • Position the drain pan under the oil drain plug.
   • Use the correct size wrench to loosen the drain plug. Be careful, as the oil may be hot.
   • Remove the drain plug completely and let the old oil drain into the pan. Allow plenty of time for all the oil to drain out – usually 15-20 minutes.

5. Remove the Old Oil Filter:

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   • Locate the oil filter. It's usually near the front of the engine.
   • Use the oil filter wrench to loosen the old oil filter. You may need to use some force.
   • Unscrew the oil filter by hand. Be prepared for some oil to spill out, so keep a rag handy.

6. Prepare the New Oil Filter:

   • Lightly lubricate the rubber gasket on the new oil filter with fresh oil. This will help create a good seal.
   • Screw the new oil filter onto the engine by hand until the gasket makes contact. Then, tighten it an additional 3/4 turn, as specified by the filter manufacturer.

7. Reinstall the Drain Plug:

   • Clean the drain plug and install a new crush washer (if necessary). The crush washer helps create a tight seal.
   • Screw the drain plug back into the oil pan by hand. Then, tighten it to the manufacturer's specified torque using a torque wrench. Overtightening can damage the oil pan.

8. Add New Oil:

   • Locate the oil fill cap on top of the engine and remove it.
   • Insert the funnel into the oil fill opening.
   • Pour in the amount of oil recommended in your owner's manual. For the 2018 Subaru Impreza, it's usually around 5 quarts, but double-check to be sure.

9. Check the Oil Level:

   • Remove the dipstick, wipe it clean, and reinsert it fully.
   • Pull the dipstick out again and check the oil level. It should be between the minimum and maximum marks. Add more oil if needed.

10. 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.
    • Turn off the engine and check the oil level again. Add more oil if necessary.

11. Lower the Vehicle:

    • Carefully lower the vehicle back to the ground using the jack.

12. Dispose of the Old Oil Properly:

    • Take the used oil to a recycling center or auto parts store. Never pour used oil down the drain or into the ground.

Tips and Tricks for a Smooth Oil Change

• Warm-Up the Engine: Before draining the oil, let the engine run for a few minutes to warm up the oil. Warm oil flows more easily, ensuring that more of the old oil is drained.
• Use a New Crush Washer: Always use a new crush washer on the drain plug. The crush washer helps create a tight seal and prevents leaks.
• Don't Overtighten: Avoid overtightening the drain plug and oil filter. Overtightening can damage the threads and cause leaks. Use a torque wrench to tighten the drain plug to the manufacturer's specified torque.
• Double-Check Everything: Before starting the engine, double-check that the drain plug and oil filter are properly tightened, and that you've added the correct amount of oil.
• Keep Records: Keep a record of your oil changes, including the date, mileage, and type of oil used. This will help you keep track of your maintenance schedule and maintain your car's value.
• Safety First: Always prioritize safety when working on your car. Use jack stands to support the vehicle, wear gloves to protect your hands, and be careful when working with hot engine parts.

By following these tips and tricks, you can make your oil change experience smoother and more efficient. Regular oil changes are essential for maintaining your 2018 Subaru Impreza's performance and longevity, so take the time to do it right.

When to Change Your Oil

Knowing when to change your oil is just as important as knowing how to change it. Here's a guide to help you determine the best oil change intervals for your 2018 Subaru Impreza:

• Manufacturer's Recommendations: The best place to start is your owner's manual. Subaru provides specific recommendations for oil change intervals based on your driving conditions. Typically, for the 2018 Impreza, the recommended interval is around 6,000 miles or 6 months, whichever comes first. However, this can vary depending on your driving habits and the type of oil you use.
• Driving Conditions: If you frequently drive in severe conditions, such as stop-and-go traffic, dusty environments, or extreme temperatures, you may need to change your oil more frequently. Severe driving conditions can cause the oil to break down more quickly, reducing its ability to protect your engine. In these cases, consider shortening your oil change interval to every 3,000 miles or 3 months.
• Type of Oil: The type of oil you use can also affect the oil change interval. Synthetic oils generally last longer than conventional oils and provide better protection for your engine. If you use synthetic oil, you may be able to extend your oil change interval to the manufacturer's recommended interval. However, always follow the manufacturer's recommendations for the specific type of oil you use.
• Oil Life Monitoring System: Some vehicles have an oil life monitoring system that calculates the remaining oil life based on your driving conditions and other factors. If your 2018 Subaru Impreza is equipped with this system, follow its recommendations for oil changes. Keep in mind that these systems are just estimates, so it's still a good idea to check your oil level and condition regularly.
• Visual Inspection: Regularly check your oil level and condition. If the oil looks dark, dirty, or sludgy, it's time for an oil change. You can also check for signs of oil leaks around the engine. If you notice any leaks, have them repaired as soon as possible.

By following these guidelines, you can determine the best oil change intervals for your 2018 Subaru Impreza and keep your engine running smoothly for years to come. Regular oil changes are a simple and cost-effective way to protect your investment and maintain your car's performance.

Final Thoughts

So there you have it! Changing the oil in your 2018 Subaru Impreza isn't as daunting as it might seem. With the right tools, a little know-how, and this guide, you can save money and keep your engine purring like a kitten. Remember to always prioritize safety and consult your owner's manual for specific recommendations. Happy wrenching!