The 2018 Jeep Cherokee is a popular SUV choice for drivers who want both comfort and rugged performance. But when it comes to maintenance, one of the most common questions is: What oil does a 2018 Jeep Cherokee take?
Choosing the right oil is not just about following the manual—it helps your engine last longer and run smoother. If you use the wrong oil, you might see higher fuel costs, more engine wear, or even expensive repairs.
Let’s look at the exact oil types you need, how to choose the best brand, and some expert tips for keeping your Cherokee in great shape.
Recommended Oil Types For The 2018 Jeep Cherokee
Different engines need different oils. The 2018 Jeep Cherokee comes with three main engine options, each with its own recommended oil type.
2.4l Tigershark Multiair I4 Engine
For this engine, Jeep recommends SAE 0W-20 full synthetic oil. This oil offers excellent protection in both hot and cold conditions and helps improve fuel efficiency.
3.2l Pentastar V6 Engine
If your Cherokee has the V6 engine, you should use SAE 5W-20 full synthetic oil. This viscosity is ideal for the V6, helping reduce friction and engine wear.
2.0l Turbocharged I4 Engine
This engine is less common in 2018 models but requires SAE 5W-30 full synthetic oil. It provides enough protection for high-temperature turbo performance.
Why Full Synthetic Oil Is Best
Jeep recommends full synthetic oil for all 2018 Cherokee engines. Here’s why:
- Synthetic oil is more stable at high and low temperatures.
- It reduces engine sludge and buildup.
- Longer oil change intervals are possible (up to 7,500 miles in many cases).
- It improves fuel economy, sometimes saving up to 2% on gas.
Many drivers overlook that synthetic oil also helps with cold starts, reducing engine wear when you first turn the key.
How Much Oil Does The 2018 Jeep Cherokee Need?
Getting the right amount is just as important as the oil type. Here are the capacities for each engine:
| Engine | Oil Capacity (with filter) |
|---|---|
| 2.4L Tigershark I4 | 5.5 quarts (5.2 liters) |
| 3.2L Pentastar V6 | 5.9 quarts (5.6 liters) |
| 2.0L Turbo I4 | 5.0 quarts (4.7 liters) |
Be careful not to overfill, as this can cause oil leaks or foaming.
Top Oil Brands For The 2018 Jeep Cherokee
You have many options, but not all oils are the same. Here are some trusted brands:
- Mopar: This is Jeep’s official brand and matches factory standards.
- Mobil 1: Popular for its strong performance and protection.
- Pennzoil Platinum: A favorite for clean engines and longer life.
- Castrol EDGE: Known for high-temperature stability.
- Valvoline Advanced Full Synthetic: Good for longer intervals and tough driving.
Always look for oils that meet the API SN or newer rating and have the correct viscosity.
How Often Should You Change The Oil?
Jeep suggests an oil change every 7,500 miles or 12 months, whichever comes first, when using synthetic oil. But if you drive in harsh conditions (like towing, dusty roads, or city stop-and-go), change it every 5,000 miles.
A key insight: Many drivers wait for the dashboard light, but following a routine schedule is better for engine health.
Diy Oil Change Tips For Beginners
Changing your oil can save money and help you understand your vehicle. Here’s a quick guide:
- Warm up the engine for a few minutes, then turn it off.
- Place a drain pan under the oil pan.
- Remove the drain plug with a wrench and let the oil drain.
- Replace the oil filter with a new one.
- Install the drain plug and fill with new oil.
- Start the engine, then check the oil level using the dipstick.
Don’t forget to dispose of the old oil responsibly at a recycling center.
Mistakes To Avoid When Choosing Oil
Some common mistakes can cause problems:
- Using conventional oil instead of synthetic (reduces engine life).
- Picking the wrong viscosity (like 10W-30 instead of 0W-20).
- Skipping the oil filter change (can leave dirt in the engine).
- Overfilling or underfilling (both can damage your engine).
One thing many beginners miss: always check the oil cap and owner’s manual for the exact requirements.
Comparison: Synthetic Vs Conventional Oil
Let’s compare the main differences.
| Feature | Full Synthetic | Conventional |
|---|---|---|
| Engine Protection | Superior | Basic |
| Change Interval | 7,500 miles | 3,000-5,000 miles |
| Cold Start Performance | Excellent | Average |
| Cost | Higher | Lower |
While synthetic oil costs more, it offers much better protection and longer intervals.
What Happens If You Use The Wrong Oil?
Using the wrong oil can lead to:
- Lower fuel efficiency
- Increased engine wear
- Hard starts in cold weather
- Risk of engine failure in extreme cases
Always double-check before adding new oil.
Where To Find The Official Recommendations
The best source for oil information is your owner’s manual. Jeep also publishes official recommendations on their site. For more technical details, you can visit the Jeep Owner’s Manuals page.
Frequently Asked Questions
What Happens If I Accidentally Use 5w-30 Instead Of 0w-20?
Using 5W-30 in a 2.4L engine once is not likely to cause immediate damage, but it can reduce fuel economy and increase engine wear over time. For best results, switch back to the correct oil as soon as possible.
Can I Mix Synthetic And Conventional Oil?
Yes, you can mix them in an emergency, but it’s not recommended for regular use. Mixing reduces the benefits of synthetic oil.
How Do I Know When My Cherokee Needs An Oil Change?
Look for the oil change indicator on your dashboard. However, it’s better to follow a regular schedule, especially if you drive in tough conditions.
Is High-mileage Oil Necessary For My 2018 Jeep Cherokee?
High-mileage oil is not required unless your Cherokee has over 75,000 miles and you notice oil leaks or consumption.
Can I Use A Different Brand Than Mopar?
Yes, as long as the oil meets Jeep’s specifications for viscosity and API rating, you can use brands like Mobil 1, Pennzoil, or Castrol.
Regular oil changes with the right oil keep your 2018 Jeep Cherokee running strong for years. By following the tips above, you can avoid common mistakes and get the most from your SUV.
