The 2018 Jeep Grand Cherokee is a popular SUV, known for its strong performance and flexibility. Many owners want to know the right oil capacity for their vehicle, since using too much or too little oil can damage the engine.
If you want your Grand Cherokee to last longer and run smoothly, knowing the correct oil amount is essential. This article will guide you through the specific oil requirements for the 2018 model, explain why oil capacity matters, and help you avoid common mistakes when changing oil.
Oil Capacity For The 2018 Jeep Grand Cherokee
The amount of oil your Jeep Grand Cherokee needs depends on its engine. The 2018 model comes with several engine options, and each requires a different oil quantity. Here’s a breakdown of the most common engines and their oil capacities:
3.6l V6 Engine
The 3.6L Pentastar V6 is the base engine for many 2018 Grand Cherokees. This engine requires:
- 6.0 quarts (5.7 liters) of oil with a new oil filter
It’s important to check the oil level after filling, as a small difference can sometimes occur due to leftover oil inside the engine.
5.7l V8 Engine
If you have a 5.7L HEMI V8, you will need:
- 7.0 quarts (6.6 liters) of oil with a filter change
This engine works harder and needs more oil to keep it cool and well-lubricated.
6.4l V8 Engine (srt)
For the performance-focused 6.4L SRT V8, the required oil capacity is:
- 7.0 quarts (6.6 liters) of oil including the filter
This engine is designed for high performance, so using the correct oil amount is critical.
3.0l Ecodiesel V6
The 3.0L EcoDiesel V6 engine is less common but found in some 2018 Grand Cherokees. It needs:
- 8.1 quarts (7.7 liters) of oil with a new oil filter
Diesel engines usually have higher oil capacities because of their unique lubrication needs.
Why Oil Capacity Matters
Using the correct oil amount is more than just following the manual. Here’s why it’s important:
- Too little oil can lead to poor lubrication and engine overheating.
- Too much oil can increase pressure, cause leaks, and damage engine seals.
- The right level helps maintain engine performance and extends the engine’s life.
Many people miss that even a half-quart difference can affect oil pressure and the way your Grand Cherokee drives.
Recommended Oil Types
Not all oils are created equal. For the 2018 Jeep Grand Cherokee, the manufacturer recommends synthetic oils for all engines. Here are the common oil grades:
- 3.6L V6: SAE 0W-20
- 5.7L V8: SAE 5W-20
- 6.4L V8: SAE 0W-40
- 3.0L EcoDiesel: SAE 5W-40
Using the right oil type helps protect your engine, especially during cold starts and extreme temperatures.
Oil Change Process: Key Steps
Changing your oil is simple if you follow the right steps. Here is a quick guide:
- Warm up the engine for a few minutes to make the oil flow better.
- Turn off the engine and let it cool for safety.
- Remove the drain plug and let the old oil drain out completely.
- Replace the oil filter with a new one.
- Put the drain plug back and tighten it.
- Pour in the new oil based on your engine’s requirement.
- Check the oil level with the dipstick and add oil if needed.
A common mistake is forgetting to change the oil filter, which can leave old oil and dirt in your system.
Oil Capacity Comparison Table
Here is a side-by-side comparison to help you quickly find the right oil amount for your engine:
| Engine | Oil Capacity (quarts) | Oil Type |
|---|---|---|
| 3.6L V6 | 6.0 | 0W-20 |
| 5.7L V8 | 7.0 | 5W-20 |
| 6.4L V8 | 7.0 | 0W-40 |
| 3.0L EcoDiesel | 8.1 | 5W-40 |
How To Check Oil Level Accurately
Many drivers only check oil after an oil change, but regular checks are key. Follow these tips:
- Park on level ground for a true reading.
- Wait a few minutes after turning the engine off.
- Use a clean dipstick and check twice to confirm.
- Look for oil between the MIN and MAX marks.
It’s easy to misread the dipstick if the car is on a slope or the engine is cold.
Oil Change Intervals
The 2018 Jeep Grand Cherokee usually needs an oil change every 5,000 to 7,500 miles, depending on driving style and conditions. Diesel engines may need changes sooner due to soot buildup. If you drive in dusty or hot areas, consider changing oil more often. Always follow the maintenance schedule in your owner’s manual.
Cost Of Oil Changes
Oil change prices can vary, but here are some average costs:
| Engine | DIY Oil Change | Professional Service |
|---|---|---|
| 3.6L V6 | $40–$60 | $70–$110 |
| 5.7L V8 | $45–$65 | $80–$120 |
| 6.4L V8 | $50–$70 | $90–$130 |
| 3.0L Diesel | $60–$80 | $100–$150 |
Doing it yourself saves money, but a professional can spot other problems during the service.
Common Mistakes To Avoid
- Overfilling or underfilling oil
- Using the wrong oil type or viscosity
- Forgetting to replace the oil filter
- Not tightening the drain plug correctly
- Ignoring the oil life indicator
Remember, the check engine light may turn on if oil is not at the right level or type.
Where To Find Reliable Information
For the most accurate and updated details, always check your owner’s manual or visit the official Jeep website.
Frequently Asked Questions
How Do I Know Which Engine My 2018 Grand Cherokee Has?
Check your vehicle registration, the sticker under the hood, or the VIN. Your owner’s manual also lists engine details.
Can I Use Regular Oil Instead Of Synthetic?
Synthetic oil is recommended for better performance and protection. Regular oil can reduce efficiency and shorten engine life.
What Happens If I Put Too Much Oil In My Grand Cherokee?
Too much oil can cause foaming, leaks, and damage to seals. Drain the excess oil as soon as possible.
How Often Should I Check My Oil Level?
Check at least once a month, and always before long trips. More frequent checks are wise if you drive in tough conditions.
Does The Oil Filter Need To Be Changed Every Time?
Yes, always replace the oil filter with each oil change to keep your engine clean and running well.
Taking care of your 2018 Jeep Grand Cherokee’s oil needs is simple, but it makes a big difference. By using the right amount and type of oil, and following a regular maintenance schedule, you can keep your SUV running strong for years to come.
