Hey Jeep enthusiasts! Maintaining your 2021 Jeep Wrangler JL is crucial for its longevity and performance. One of the most important maintenance tasks is the oil change. This guide will walk you through everything you need to know to perform a successful oil change on your 2021 Jeep Wrangler JL, ensuring your engine stays in top condition.

Why is Regular Oil Change Important?

Oil changes are vital for several reasons. Primarily, engine oil lubricates the moving parts within your engine, reducing friction and wear. Over time, oil breaks down and becomes contaminated with dirt, debris, and combustion byproducts. This degradation reduces its ability to protect your engine, leading to increased wear and potential damage. Regular oil changes ensure that your engine is always running with clean, high-quality oil. Additionally, fresh oil helps to dissipate heat, preventing your engine from overheating, and improves fuel efficiency by reducing internal friction. Ignoring oil change intervals can lead to significant engine problems down the line, costing you far more in repairs than the simple cost of routine maintenance. For example, sludge buildup from old oil can clog oil passages, starving critical engine components of lubrication. This can result in premature wear of bearings, pistons, and other vital parts. Therefore, adhering to the recommended oil change schedule is a proactive step in maintaining the health and extending the life of your 2021 Jeep Wrangler JL.

What You'll Need

Before you begin, gather all the necessary supplies and tools. This will make the process smoother and more efficient. Here’s a comprehensive list:

• New Oil: The correct type and amount of oil are crucial. For the 2021 Jeep Wrangler JL, refer to your owner's manual for the specific oil type and capacity recommended for your engine. Typically, the 3.6L V6 engine uses around 6 quarts of 5W-20 oil, while the 2.0L turbocharged engine may use a different specification, so always double-check. Using the wrong type of oil can affect your engine's performance and longevity.
• New Oil Filter: A new oil filter is essential to trap contaminants and keep your oil clean. Make sure to purchase the correct oil filter for your 2021 Jeep Wrangler JL. Using a high-quality oil filter will ensure optimal filtration and protect your engine from harmful particles. Some popular brands include Mopar, Mobil 1, and K&N.
• Wrench Set: You'll need a wrench to remove the oil drain plug. Ensure you have the correct size wrench to avoid stripping the plug. Typically, a 13mm or 15mm wrench is required, but refer to your vehicle's specifications to be certain. A good quality wrench set will also come in handy for other maintenance tasks.
• Oil Filter Wrench: This tool is specifically designed to remove and install oil filters. There are different types of oil filter wrenches available, so choose one that fits your oil filter size. Using the correct oil filter wrench will make removing the old filter much easier and prevent damage to the filter housing.
• Drain Pan: A drain pan is necessary to catch the old oil as it drains from the engine. Choose a pan with a large enough capacity to hold all the used oil, typically around 6-7 quarts. This will help keep your workspace clean and prevent spills.
• Funnel: A funnel will help you pour the new oil into the engine without spilling. Using a funnel is especially important to avoid oil getting onto the engine components, which can cause a mess and potential fire hazard.
• Gloves: Protect your hands from dirt and oil by wearing gloves. Nitrile gloves are a good option as they are resistant to oil and chemicals. Wearing gloves will also provide a better grip on tools and components.
• Rags or Shop Towels: Keep rags or shop towels handy to wipe up any spills or drips. Having plenty of rags available will help keep your workspace clean and prevent oil from getting onto other parts of your vehicle.
• Jack and Jack Stands (Optional): If you need more clearance to access the oil drain plug, use a jack and jack stands to safely lift the vehicle. Always use jack stands to support the vehicle before working underneath it. Safety is paramount, so never work under a vehicle supported only by a jack.
• Wheel Chocks (Optional): If you're lifting the vehicle, use wheel chocks to prevent it from rolling. Place the wheel chocks behind the rear wheels for added safety. This will ensure that the vehicle remains stable while you're working underneath it.

Step-by-Step Guide

Follow these steps to perform an oil change on your 2021 Jeep Wrangler JL:

1. Prepare the Vehicle:
   • Park your Jeep on a level surface. Engage the parking brake and, if using them, place wheel chocks behind the rear wheels.
   • If you need more clearance, use a jack to lift the front of the vehicle. Always use jack stands to support the vehicle securely before working underneath.
2. Warm-Up the Engine:
   • Start the engine and let it run for a few minutes to warm the oil. Warm oil flows more easily, making the draining process more efficient. However, be careful not to let the engine get too hot, as this can make the oil difficult to handle.
   • Turn off the engine after a few minutes.
3. Locate the Oil Drain Plug:
   • Locate the oil drain plug underneath the engine. It's typically on the oil pan, which is usually at the bottom of the engine.
   • Place the drain pan directly under the drain plug to catch the used oil.
4. Remove the Drain Plug:
   • Using the correct size wrench, carefully loosen the drain plug. Once it's loose, finish removing it by hand, being careful as the oil will start to flow out.
   • Allow the oil to drain completely into the pan. This may take 10-15 minutes.
5. Remove the Oil Filter:
   • Locate the oil filter. It's usually near the engine block and can be accessed from underneath or from the engine bay, depending on your specific model.
   • Use the oil filter wrench to loosen and remove the old oil filter. Be prepared for some oil to spill as you remove it.
   • Wipe the oil filter mounting surface clean with a rag.
6. Install the New Oil Filter:
   • Lightly lubricate the rubber gasket on the new oil filter with fresh oil. This helps create a good seal.
   • Screw the new oil filter onto the mounting surface by hand until the gasket makes contact. Then, tighten it an additional half to three-quarters of a turn, or according to the manufacturer's instructions.
   • Do not overtighten the oil filter, as this can damage the gasket and cause leaks.
7. Reinstall the Drain Plug:
   • Once the oil has completely drained, clean the drain plug and install a new crush washer if necessary. The crush washer ensures a tight seal and prevents leaks.
   • Tighten the drain plug to the manufacturer's specified torque. Overtightening can damage the oil pan, while undertightening can cause leaks. Refer to your vehicle's service manual for the correct torque specification.
8. Add New Oil:
   • Locate the oil fill cap on top of the engine and remove it.
   • Using a funnel, pour in the correct amount of new oil as specified in your owner's manual. Be sure to use the correct type of oil for your 2021 Jeep Wrangler JL.
   • After adding the oil, replace the oil fill cap.
9. Check the Oil Level:
   • Wait a few minutes for the oil to settle, then pull out 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 on the dipstick.
   • If the oil level is low, add more oil as needed.
10. Start the Engine and Check for Leaks:
    • Start the engine and let it run for a few minutes. Check for any leaks around the oil drain plug and oil filter.
    • If you see any leaks, tighten the drain plug or oil filter as needed.
    • Turn off the engine and check the oil level again.
11. Reset the Oil Life Indicator:
    • Reset the oil life indicator in your vehicle's computer. The procedure for resetting the oil life indicator may vary depending on your vehicle's model. Refer to your owner's manual for specific instructions.
12. Dispose of the Old Oil Properly:
    • Take the used oil to a recycling center or auto parts store for proper disposal. Never pour used oil down the drain or onto the ground, as it can contaminate the environment.

Tips and Tricks

• Always consult your owner's manual: Your owner's manual is the best source of information for the specific oil type and capacity for your 2021 Jeep Wrangler JL.
• Use the correct tools: Using the correct tools will make the job easier and prevent damage to your vehicle.
• Don't overtighten: Overtightening the drain plug or oil filter can damage the components and cause leaks.
• Dispose of used oil properly: Used oil is a hazardous waste and should be disposed of properly.
• Consider a Fumoto valve: A Fumoto valve replaces your oil drain plug and makes future oil changes easier and cleaner.

Conclusion

Performing a 2021 Jeep Wrangler JL oil change is a straightforward task that can save you money and ensure your engine's longevity. By following this guide, you can confidently change your oil and keep your Jeep running smoothly. Remember to always consult your owner's manual for specific recommendations and safety precautions. Happy Jeeping!