2020 Jeep Grand Cherokee Oil Type And Capacity

Do you feel that familiar pang of uncertainty every time your Jeep’s oil change light flickers on? You’re not alone. Many DIYers and off-road enthusiasts grapple with getting the oil change just right, especially for a capable vehicle like the 2020 Grand Cherokee. Understanding the correct

2020 Jeep Grand Cherokee oil type and capacity

is not just about following a manual; it’s about ensuring your powerhouse engine performs flawlessly, whether you’re cruising the highway or tackling a rocky trail.

At FatBoysOffroad, we know the difference proper maintenance makes. This comprehensive guide will cut through the confusion, providing you with all the expert knowledge you need. You’ll learn precisely what oil your Grand Cherokee demands, how much it needs, and how to execute a professional-grade oil change yourself.

Get ready to empower yourself with the know-how to keep your 2020 Grand Cherokee running strong and reliable for years to come.

Table of Contents

Understanding Your 2020 Jeep Grand Cherokee Oil Type and Capacity Needs

Getting the right oil for your 2020 Grand Cherokee is critical. Using the wrong type or an incorrect amount can lead to reduced performance, increased wear, and potentially costly engine damage. We’ll break down the specifics by engine size.

Engine Oil Specifications for Each Powertrain

The 2020 Grand Cherokee offered several robust engine options. Each one has a specific appetite for a particular oil type and capacity. Always consult your owner’s manual for the most precise information for your specific trim.

3.6L Pentastar V6 Engine: This is a popular and reliable engine.

Oil Type: 5W-20 Full Synthetic engine oil.
Specification: It must meet Chrysler MS-6395 specification.
Capacity: Approximately 6 quarts (5.7 liters).

5.7L Hemi V8 Engine: The classic Hemi provides excellent power.

Oil Type: 5W-20 Full Synthetic engine oil.
Specification: It also requires Chrysler MS-6395 specification.
Capacity: Approximately 7 quarts (6.6 liters).

6.4L SRT Hemi V8 Engine: For those who crave more performance.

Oil Type: 0W-40 Full Synthetic engine oil.
Specification: This engine demands the Chrysler MS-12633 specification.
Capacity: Approximately 7 quarts (6.6 liters).

6.2L Supercharged Hemi V8 (Trackhawk): The ultimate Grand Cherokee powerhouse.

Oil Type: 0W-40 Full Synthetic engine oil.
Specification: Like the SRT, it needs Chrysler MS-12633 specification.
Capacity: Approximately 7 quarts (6.6 liters).

Always double-check the oil level after filling, running the engine briefly, and then letting it sit for a few minutes. This ensures the oil has fully circulated and settled.

Why Full Synthetic Oil is Non-Negotiable

For all 2020 Grand Cherokee engines, full synthetic oil is the standard. This isn’t just a recommendation; it’s a requirement. Synthetic oils offer superior protection and performance compared to conventional or synthetic blend oils.

They maintain their viscosity better across extreme temperature ranges, a huge advantage for off-roaders. This also means better cold start protection and resistance to thermal breakdown during hard use. Especially when considering the specific

2020 Jeep Grand Cherokee oil type and capacity

, choosing full synthetic is key to engine longevity.

Why the Right Engine Oil Matters for Your Grand Cherokee

Your engine oil is the lifeblood of your vehicle. It lubricates moving parts, dissipates heat, cleans internal components, and protects against corrosion. Using the correct viscosity and specification is crucial for optimal engine health and performance.

The Role of Viscosity (e.g., 5W-20, 0W-40)

Viscosity refers to the oil’s resistance to flow. The numbers on the oil bottle (e.g., 5W-20) indicate its performance at different temperatures.

The “W” stands for winter. The first number (e.g., 5W) indicates how well the oil flows when cold. A lower number means better cold-start protection.
The second number (e.g., 20) represents the oil’s viscosity at operating temperature. It describes its resistance to thinning out when hot.

Using the wrong viscosity can lead to excessive engine wear, poor fuel economy, and even engine failure. Thicker oil might not circulate properly when cold, while thinner oil might not provide adequate protection when hot.

Understanding API and Manufacturer Specifications (MS-6395, MS-12633)

Beyond viscosity, engine oil must meet specific industry and manufacturer standards. The API (American Petroleum Institute) starburst symbol indicates quality and energy-conserving properties. The ‘SN Plus’ or ‘SP’ ratings are current API standards for gasoline engines.

However, Chrysler (and by extension, Jeep) also has its own stricter specifications. These include

MS-6395

for the V6 and 5.7L V8, and

MS-12633

for the high-performance SRT and Trackhawk engines. These specifications ensure the oil contains the precise additive package and base stock properties needed for these specific engine designs. Ignoring these specifications can void your warranty and cause significant engine damage over time.

Step-by-Step: Changing Your Grand Cherokee’s Engine Oil

Performing an oil change yourself is a rewarding and cost-effective task. It also gives you a chance to inspect other components under your vehicle. Always prioritize safety first.

Essential Tools and Supplies for a DIY Oil Change

Before you begin, gather everything you’ll need. This preparation saves time and reduces frustration.

New engine oil (correct type and capacity for your engine)
New oil filter (specific to your Grand Cherokee’s engine)
Oil filter wrench (cap style is often best for Jeeps)
Drain pan (large enough to hold all the old oil)
Socket wrench and appropriate socket for the drain plug (usually 13mm or 15mm)
Torque wrench (for drain plug and oil filter)
Funnel
Clean rags or shop towels
Jack and jack stands (or a vehicle lift)
Wheel chocks
Safety glasses and work gloves
Cardboard or drop cloth (to protect your driveway)

Safety First: Preparing Your Vehicle

Your safety is paramount. Never work under a vehicle supported only by a jack.

Park on a Level Surface: Ensure the ground is flat and stable.
Engage Parking Brake: This prevents the vehicle from rolling.
Chock the Wheels: Place wheel chocks behind the rear wheels (if lifting the front) or vice-versa.
Lift the Front End: Use a sturdy jack to lift the front of your Grand Cherokee. Place jack stands securely under the frame rails or designated lift points. Ensure the vehicle is stable on the stands before you go underneath.
Allow Engine to Cool Slightly: Warm oil drains better, but hot oil can cause severe burns. Let the engine cool for 15-20 minutes after running.

Draining the Old Oil

This is where the dirty work begins.

Locate the Drain Plug: It’s usually on the bottom of the oil pan, which is located under the engine.
Position the Drain Pan: Place your drain pan directly underneath the drain plug.
Remove the Drain Plug: Use your socket wrench to loosen and remove the drain plug. Be prepared for oil to flow out quickly. Guide the plug out carefully to avoid dropping it into the hot oil.
Allow to Drain Completely: Let the oil drain until it slows to a drip. This usually takes 10-15 minutes.
Reinstall Drain Plug: Clean the drain plug and the area around the drain hole. If your drain plug has a crush washer, replace it. Tighten the drain plug to the manufacturer’s specified torque (usually around 20 ft-lbs, but check your manual). Do not overtighten, as this can strip the oil pan threads.

Replacing the Oil Filter

A fresh filter is just as important as fresh oil.

Locate the Oil Filter: Its location varies by engine. On Pentastar V6s, it’s often a cartridge filter on top of the engine under a plastic cap. On Hemi V8s, it’s typically a canister filter on the side or bottom of the engine block.
Prepare for Spills: Place rags or a small secondary drain pan underneath the filter area, as some oil will inevitably spill.
Remove the Old Filter: Use your oil filter wrench to loosen the filter. Once loose, carefully unscrew it by hand.
Install the New Filter:
- For canister filters: Apply a thin film of new engine oil to the rubber gasket of the new filter. Screw it on by hand until it’s snug, then tighten an additional 3/4 to 1 full turn (check filter instructions for exact guidance). Do NOT overtighten with a wrench.
- For cartridge filters: Remove the old cartridge and O-ring. Install the new cartridge and new O-rings (usually supplied with the filter). Tighten the cap to the specified torque.

Adding New Engine Oil

This is the final step before checking your work.

Lower the Vehicle: Carefully lower your Grand Cherokee from the jack stands.
Locate the Oil Fill Cap: It’s usually on top of the engine and clearly marked.
Add New Oil: Place a funnel in the oil fill opening. Slowly pour in the recommended amount of new oil (refer to the 2020 Jeep Grand Cherokee oil type and capacity for your engine).
Check Oil Level: After adding all but about half a quart, replace the oil cap. Start the engine and let it run for about a minute to circulate the new oil. Turn off the engine and wait 5-10 minutes for the oil to settle back into the pan.
Verify Dipstick Reading: Pull out the dipstick, wipe it clean, reinsert it fully, and pull it out again. The oil level should be between the “MIN” and “MAX” marks. Add the remaining oil incrementally if needed, rechecking the dipstick each time.
Inspect for Leaks: Look under the vehicle for any signs of leaks around the drain plug or oil filter.

Off-Roading and Oil Maintenance: What You Need to Know

If you’re taking your Grand Cherokee off the beaten path, your oil maintenance routine might need some adjustments. Off-roading subjects your engine to harsher conditions than typical road driving.

Increased Stress on Engine Oil

Extreme temperatures, heavy loads, steep inclines, and dusty environments all put extra strain on your engine oil. This can accelerate oil breakdown and reduce its effectiveness.

Dust and Dirt: Fine particles can get past air filters, contaminating the oil and increasing abrasive wear.
High Temperatures: Climbing steep grades or running at low speeds in hot weather can significantly raise engine oil temperatures.
Water Crossings: While unlikely to directly contaminate oil through the sealed system, extreme changes in temperature from water can stress components.

Adjusting Your Oil Change Intervals for Off-Road Use

For serious off-roaders, sticking strictly to the factory-recommended 10,000-mile (or 1-year) oil change interval might not be enough. Consider reducing your oil change interval to 5,000-7,500 miles, or even sooner if you frequently tackle challenging terrain.

Regularly check your oil level and condition, especially before and after long trips. If the oil looks excessively dark, sludgy, or you notice a fuel smell, it’s time for a change, regardless of mileage.

Monitoring Oil Levels on the Trail

Always carry a spare quart of the correct

2020 Jeep Grand Cherokee oil type and capacity

with you when venturing into remote areas. Check your oil level every morning during multi-day trips.

A sudden drop in oil pressure on the trail can quickly lead to engine damage. If your oil pressure warning light comes on, safely pull over and shut off the engine immediately. Check your oil level and look for any visible leaks. If you’re in a remote area and unsure, it’s always better to seek assistance from park rangers or experienced adventurers rather than risk catastrophic engine failure.

Common Questions and Troubleshooting Your Oil System

Even with the best maintenance, questions or minor issues can arise. Knowing how to diagnose them can save you headaches.

What if I Use the Wrong Oil Type?

Using the wrong viscosity or non-synthetic oil can harm your engine.

Incorrect Viscosity: Can lead to poor lubrication, increased wear, reduced fuel economy, and potential engine damage, especially in extreme temperatures.
Non-Synthetic Oil: If your engine requires synthetic, using conventional oil will not provide adequate protection against heat and wear. It will break down faster and could lead to sludge buildup.

If you accidentally use the wrong oil, the best course of action is to drain it and replace it with the correct type as soon as possible.

My Grand Cherokee is Consuming Oil – Is This Normal?

Some oil consumption is considered normal, especially in modern engines and high-mileage vehicles. However, excessive consumption (e.g., needing to add a quart every 1,000-2,000 miles) could indicate a problem.

Possible Causes: Leaking gaskets or seals, worn piston rings, or issues with the PCV (Positive Crankcase Ventilation) system.
What to Do: Monitor your oil consumption closely. Check for visible leaks under the vehicle. If consumption is excessive, have a qualified mechanic diagnose the issue.

Resetting the Oil Change Light

After changing your oil, the “Oil Change Required” message will likely remain until you reset it.

Turn the ignition to the “ON” position (do not start the engine).
Fully depress the accelerator pedal slowly three times within 10 seconds.
Turn the ignition to the “OFF” position.
Start the engine to confirm the light has reset.

If this method doesn’t work, consult your owner’s manual for specific instructions for your trim level, as some models may vary.

Frequently Asked Questions About 2020 Jeep Grand Cherokee Oil Type and Capacity

We’ve covered a lot, but here are some quick answers to common questions.

How often should I change the oil in my 2020 Jeep Grand Cherokee?

For most driving conditions, Chrysler recommends changing the oil every 10,000 miles or 12 months, whichever comes first, using the specified full synthetic oil. However, if you frequently drive in severe conditions (e.g., heavy towing, extreme temperatures, off-roading, dusty environments), consider shortening this interval to 5,000-7,500 miles.

What brand of oil should I use for my 2020 Grand Cherokee?

While Mopar (Chrysler’s OEM brand) oil is always a safe bet, any reputable brand of full synthetic oil that explicitly states it meets the required Chrysler specification (MS-6395 for V6/5.7L V8, MS-12633 for SRT/Trackhawk) and the correct viscosity (5W-20 or 0W-40) will work perfectly. Popular brands include Pennzoil, Mobil 1, Valvoline, and Castrol.

Can I use a high-mileage oil in my 2020 Grand Cherokee?

High-mileage oils typically contain additives designed to condition seals and reduce oil consumption in older engines. While they are usually full synthetic and meet specifications, they are generally not necessary for a 2020 model unless you are experiencing significant oil leaks or consumption at very high mileage. Always ensure it meets the specific Chrysler MS spec.

What is the difference between MS-6395 and MS-12633?

Both are Chrysler specifications, but they are designed for different engine types. MS-6395 is for engines like the Pentastar V6 and 5.7L Hemi, requiring 5W-20 oil. MS-12633 is a more robust specification for high-performance engines like the 6.4L SRT and 6.2L Trackhawk, which use 0W-40 oil. It ensures the oil can withstand the extreme demands of these powerful engines.

Where is the oil filter located on my 2020 Jeep Grand Cherokee?

The location depends on your engine:

3.6L Pentastar V6: The oil filter is a cartridge style, located on top of the engine, usually near the front, under a black plastic cap.
5.7L Hemi V8, 6.4L SRT Hemi V8, 6.2L Supercharged Hemi V8: These engines typically use a spin-on canister filter, usually located on the side or bottom of the engine block, often accessible from underneath the vehicle.

Always confirm with your owner’s manual or by visually inspecting your engine bay.

Conclusion: Empowering Your DIY Journey

Mastering the intricacies of your

2020 Jeep Grand Cherokee oil type and capacity

is a fundamental step in becoming a truly self-reliant off-roader and vehicle owner. By understanding the specific needs of your engine, selecting the right products, and following safe, proven procedures, you’re not just performing maintenance—you’re investing in the longevity and reliability of your adventure machine.

Remember, consistent, quality maintenance is the backbone of any vehicle that tackles the trails. Take pride in your work, pay attention to the details, and your 2020 Grand Cherokee will reward you with years of faithful service. So grab your wrench, get your oil, and confidently take charge of your Jeep’s health. Stay safe and stay comfortable out there!

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Thomas Corle

Founder & Automobile expert at FatBoysOffroad

Automobile expert and off-road enthusiast, sharing in-depth knowledge of vehicles, gear, and adventures. Helping readers make smart decisions and enjoy the thrill of off-roading safely and confidently.