2020 Grand Cherokee Limited Oil Change - Best Oil & Interval?

ClearTheCode admin answer:

Performing your own oil changes is a great way to save money and ensure your vehicle gets the care it needs. Here's a breakdown for your 2020 Jeep Grand Cherokee Limited with the 3.6L Pentastar engine:

1. Recommended Oil Type and Weight: For your 3.6L Pentastar engine, Jeep specifically recommends using SAE 5W-20 full synthetic engine oil. Using synthetic oil is crucial for optimal engine protection, especially in varying temperatures and for extended drain intervals. Always look for oil that meets Chrysler Material Standard MS-6395.

2. Oil Change Interval: The official recommendation from Jeep for your model is typically 10,000 miles or 12 months, whichever comes first, under normal driving conditions. However, your vehicle's Oil Change Indicator System (OCIS) is the most reliable guide. It monitors driving conditions and engine operating parameters to determine the optimal time for an oil change. It's generally best to follow this system, but never exceed 10,000 miles or 12 months.

3. Filter Recommendation: Always use a high-quality oil filter that meets or exceeds OEM specifications. Mopar filters are designed specifically for your engine, but reputable aftermarket brands like Wix, Mann, or PurolatorONE are also good choices. The 3.6L Pentastar uses a cartridge-style filter located on top of the engine, which makes it relatively easy to access.

4. DIY Tips for First-Timers:

   • Tools: You'll need a wrench for the drain plug (usually 13mm or 1/2 inch), an oil filter wrench (cap-style for the cartridge filter), a drain pan, a funnel, and safety glasses/gloves.
   • Warm Engine: Perform the oil change when the engine is warm (not hot) to allow the oil to drain more easily.
   • Drain Plug Gasket: It's good practice to replace the drain plug gasket (crush washer) every few oil changes to prevent leaks.
   • Torque Specs: Ensure you tighten the drain plug and oil filter housing to the manufacturer's specified torque settings to prevent leaks or damage. The oil filter housing is typically around 18 ft-lbs (25 Nm).
   • Reset Oil Life Monitor: After the oil change, remember to reset the oil life monitor through your vehicle's infotainment system or instrument cluster menu.

When to See a Shop: If you're uncomfortable working under the vehicle, don't have the proper tools, or encounter any unexpected issues like stripped bolts or persistent leaks after the change, it's always best to consult a professional mechanic.