Ever felt that satisfying rumble of your 2018 Jeep Cherokee taking on a challenging trail? That feeling of freedom and capability is what we live for at FatBoysOffroad. But to keep that beast roaring and tackling every adventure, regular maintenance isn’t just a suggestion—it’s essential. One of the most critical tasks you can master is the engine oil change.
You might think an oil change is just a simple drain and refill. However, doing it right for your specific KL series Cherokee can make all the difference in engine longevity and performance, especially when you push it hard off-road. Neglecting this vital service can lead to costly repairs down the line, robbing you of precious trail time.
This comprehensive guide will walk you through everything you need to know about performing a proper 2018 Jeep Cherokee oil change. We’ll cover the right tools, the correct fluids, step-by-step instructions, and expert tips to ensure your Jeep stays reliable, whether you’re commuting or conquering rugged terrain. Get ready to empower yourself with the knowledge to keep your Cherokee in top condition.
Let’s dive in and transform you into a confident DIY mechanic, ready to tackle your Jeep’s lubrication needs with precision and skill.
Why Your 2018 Jeep Cherokee Needs Fresh Oil and How Often
Your Jeep’s engine is a complex system of moving parts, all relying on clean, high-quality motor oil to reduce friction, dissipate heat, and prevent wear. Over time, engine oil breaks down, losing its lubricating properties and becoming contaminated with combustion byproducts and microscopic metal particles.
For a 2018 Jeep Cherokee, especially one that sees off-road action, clean oil is paramount. Dirty oil can lead to increased engine wear, reduced fuel efficiency, and even catastrophic engine failure if left unchecked.
Understanding Oil Change Intervals
Jeep recommends specific oil change intervals, typically found in your owner’s manual. For most 2018 Cherokee models under normal driving conditions, this is usually every 10,000 miles or 12 months, whichever comes first.
However, if you’re an off-road enthusiast, a frequent trailer hauler, or live in extreme climates, your Cherokee falls under “severe duty” conditions. This means you should consider changing your oil and filter more frequently, often every 5,000 miles or 6 months.
It’s always best to err on the side of caution when your vehicle is subjected to harsher environments.
Gathering Your Gear: Tools and Materials for the Job
Before you even think about crawling under your Jeep, preparation is key. Having all your tools and materials ready will make the process smooth and safe. Don’t cut corners here; quality tools make a difference.
Essential Tools for Your Cherokee Oil Service
- Socket Wrench Set: You’ll need a 13mm socket for the drain plug and a 24mm or 27mm socket (depending on your specific filter housing) for the oil filter cap.
- Torque Wrench: Absolutely critical for proper drain plug and oil filter cap tightening. Over-tightening can strip threads, under-tightening can lead to leaks.
- Oil Filter Wrench (Cap Style): This ensures a snug fit on the plastic oil filter housing cap.
- Drain Pan: Large enough to hold at least 6 quarts of old oil.
- Funnel: For mess-free refilling of new oil.
- Jack and Jack Stands: If you need extra clearance. Never work under a vehicle supported only by a jack.
- Wheel Chocks: To prevent the vehicle from rolling.
- Gloves and Safety Glasses: Protect your hands and eyes from hot oil and debris.
- Shop Rags or Paper Towels: For inevitable spills.
Materials You’ll Need
- New Engine Oil: Your 2018 Jeep Cherokee (most models) requires 5W-20 synthetic motor oil. Always check your owner’s manual for the exact specification and capacity. Most 3.2L V6 Pentastar engines take around 5.9-6 quarts. Ensure it meets API (American Petroleum Institute) standards.
- New Oil Filter: A quality filter is crucial. We recommend a Mopar filter (part number MO-339) or an equivalent premium aftermarket brand. The 2018 Cherokee uses a cartridge-style filter element, not a spin-on can.
- New Drain Plug Crush Washer: Often overlooked, this small copper or aluminum washer ensures a leak-free seal for your drain plug. It’s typically replaced every time.
The Step-by-Step 2018 Jeep Cherokee Oil Change Procedure
Now that you’ve got your gear, let’s get down to business. Follow these steps carefully for a successful and safe oil change.
Step 1: Prepare Your Jeep and Work Area
Park your Jeep on a level surface. Engage the parking brake. If you need more clearance, carefully lift the front end with your jack and secure it with jack stands. Place wheel chocks behind the rear wheels.
Run the engine for a few minutes (5-10) to warm up the oil. Warm oil drains more easily, carrying more contaminants with it. Be cautious, as the oil will be hot.
Step 2: Locate and Drain the Old Oil
Crawl under the front of your Jeep. The oil pan and drain plug are usually towards the front, near the passenger side. Place your drain pan directly underneath the drain plug.
Using your 13mm socket, carefully loosen the drain plug. Once it’s loose, remove it by hand, pulling it away quickly to avoid getting hot oil on your hand. Let the old oil drain completely, which can take 10-15 minutes.
While the oil is draining, inspect the drain plug for any damage. Replace the old crush washer with a new one.
Step 3: Replace the Oil Filter
The oil filter housing on the 2018 Jeep Cherokee is typically located on top of the engine, often near the front or middle. It’s a black plastic cap.
Using your 24mm or 27mm socket and ratchet, carefully loosen the oil filter housing cap. Be gentle, as it’s plastic. Remove the cap, and the old filter element will come out with it.
Remove the old filter from the cap. You’ll also find a large O-ring on the cap and sometimes a smaller O-ring on the filter stem. Replace both with the new O-rings supplied with your new filter.
Install the new cartridge filter element into the cap, ensuring it’s seated correctly. Lightly lubricate the new O-rings with a dab of fresh oil.
Step 4: Reinstall the Drain Plug and Oil Filter
Once the old oil has fully drained, reinstall the drain plug with its new crush washer. Hand-tighten it first, then use your torque wrench to tighten it to the manufacturer’s specified torque, usually around 20 ft-lbs (check your manual).
Carefully screw the oil filter housing cap back onto the engine by hand until it’s snug. Then, use your torque wrench to tighten it to the specified torque, often around 18 ft-lbs. Do not over-tighten the plastic cap.
Step 5: Refill with Fresh Oil
Lower your Jeep safely from the jack stands, if you used them. Open the oil filler cap on top of the engine. Place your funnel in the filler neck.
Carefully pour in the recommended amount of new 5W-20 synthetic motor oil. For most 3.2L V6 Cherokees, this is about 5.9 quarts. Start with 5.5 quarts, then check the dipstick.
Replace the oil filler cap. Start the engine and let it run for about a minute. Check for any leaks around the drain plug or oil filter housing. The oil pressure light should turn off quickly.
Step 6: Check and Top Off Oil Level
Turn off the engine and wait 5-10 minutes for the oil to settle in the pan. Pull out the dipstick, wipe it clean, reinsert it fully, then pull it out again.
The oil level should be between the “MIN” and “MAX” marks. Add small amounts of oil as needed until the level is correct. Do not overfill.
Finally, reset your oil change reminder light, which is usually done through your instrument cluster menu.
Expert Tips and Common Pitfalls to Avoid
Even seasoned DIYers can make mistakes. Here are some pro tips to ensure your 2018 Jeep Cherokee oil change goes off without a hitch.
Torque Matters: Don’t Guess!
We can’t stress this enough. Using a torque wrench for both the drain plug and the oil filter cap prevents stripped threads (a costly repair!) and leaks. Consult your owner’s manual for exact torque specifications.
Always Use the Right Oil
Using conventional oil when synthetic is specified, or the wrong viscosity (e.g., 10W-30 instead of 5W-20), can lead to premature engine wear and reduced performance. Your Jeep’s engine is designed for specific lubricants.
Inspect As You Go
While you’re under the vehicle, take a moment to look around. Check for any other leaks, worn hoses, or damaged suspension components. This is a great opportunity for a quick visual inspection of your undercarriage, especially important for off-roaders.
Off-Road Considerations
If your Cherokee sees a lot of dirt, mud, or water crossings, consider more frequent oil changes. These environments introduce more contaminants into the engine and can put extra stress on the oil. After a particularly dusty trail ride, checking your air filter is also a good idea.
Always carry a spare quart of oil and a funnel on extended trips. An unexpected leak or consumption can be managed in the backcountry with quick action.
Responsible Oil Disposal
Never pour used motor oil down the drain or onto the ground. It’s a hazardous waste and extremely harmful to the environment.
Most auto parts stores, quick lube shops, and municipal waste facilities accept used motor oil for recycling. Store your old oil in a sealed container (like the empty new oil bottles) and take it to a designated collection point.
Frequently Asked Questions About Your 2018 Jeep Cherokee Oil Change
What type of oil does a 2018 Jeep Cherokee take?
Most 2018 Jeep Cherokees, especially those with the 3.2L V6 Pentastar engine, require 5W-20 synthetic motor oil. Always double-check your owner’s manual for the exact specification and capacity, as there can be variations.
How much oil does a 2018 Jeep Cherokee 3.2L V6 hold?
The 3.2L V6 Pentastar engine in a 2018 Jeep Cherokee typically holds about 5.9 to 6 quarts of engine oil. It’s best to add slightly less than the full amount, then check the dipstick and top off as needed.
Can I use conventional oil in my 2018 Jeep Cherokee?
No, it is highly recommended to use synthetic motor oil as specified by Jeep for your 2018 Cherokee. Using conventional oil can compromise engine protection, especially under severe driving conditions, and may not meet the manufacturer’s warranty requirements.
Where is the oil filter located on a 2018 Jeep Cherokee?
Unlike many vehicles with spin-on filters, the 2018 Jeep Cherokee uses a cartridge-style oil filter. The oil filter housing is typically located on top of the engine, often near the front or middle, covered by a black plastic cap.
How do I reset the oil change light on my 2018 Jeep Cherokee?
After your 2018 Jeep Cherokee oil change, the oil change light can usually be reset using the steering wheel controls and the instrument cluster display. Navigate to the “Vehicle Info” or “Oil Life” section, then follow the prompts to reset the oil life monitor. The exact steps may vary slightly, so consult your owner’s manual.
Conclusion: Your Jeep is Ready for the Next Adventure
Performing your own 2018 Jeep Cherokee oil change is a rewarding experience. Not only does it save you money, but it gives you a deeper understanding of your vehicle and ensures that critical maintenance is done right.
By following these detailed steps and heeding our expert advice, you’re not just changing oil; you’re investing in the longevity and reliability of your Jeep. This hands-on approach helps you catch potential issues early, keeping your Cherokee performing at its best, whether you’re cruising city streets or conquering the toughest trails.
Regular maintenance is the backbone of any reliable off-road rig. Keep that engine humming with fresh, clean oil, and your 2018 Jeep Cherokee will reward you with countless miles of adventure. Get out there, explore, and stay safe on the trails!
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