In short, the oil you should use depends on the Gladiator’s engine. For the 2020 Gladiator, the gasoline 3.6-liter V6 typically requires 0W-20 synthetic oil, while the optional 3.0-liter EcoDiesel diesel uses 5W-40 full-synthetic oil. The gasoline engine holds about 6 quarts of oil, and the diesel’s capacity runs higher. Always verify the exact grade and capacity on the oil fill cap or in your owner’s manual.
This article explains the two engine options offered for the 2020 Gladiator, the recommended oil types and performance specifications, and the usual capacities and maintenance intervals to keep the powerplant properly nourished. It’s a practical guide for owners who want to stay aligned with Jeep’s specifications and avoid potential warranty issues.
Oil types by Gladiator engine
Below are the typical oil specifications you’ll encounter for the two engines available in the 2020 Gladiator. Market variations can apply, so always check your specific VIN.
- 3.6L Pentastar V6 (gasoline): 0W-20 synthetic oil is recommended. Look for API SN or SP service classifications; ILSAC GF-6 compatibility is common for modern engines. Approximate capacity is about 6 quarts with filter.
- 3.0L EcoDiesel V6 (diesel): 5W-40 full-synthetic oil is recommended. Look for API CK-4 or CJ-4 compliance (some markets may use ACEA C3). Approximate capacity is roughly 7–8 quarts with filter.
Note: Exact grade, spec, and capacity can vary by market and production date. Always confirm by checking the oil cap and the owner’s manual for your exact Gladiator configuration.
Oil capacity and change intervals
Maintenance intervals and oil capacity differ by engine, but the figures below reflect common guidance for the 2020 Gladiator lineup. If you tow, drive in extreme heat, or operate in dusty or heavy-use conditions, you may need to shorten those intervals.
- Gasoline 3.6L V6: Approximately 6 quarts of oil with a filter. Recommended oil change interval is about every 7,500 miles under normal driving; severe conditions or heavy towing may require more frequent changes (often 3,000–5,000 miles).
- EcoDiesel 3.0L V6: Approximately 7–8 quarts of oil with a filter. Recommended oil change interval is up to around 10,000 miles under normal driving; for severe service, shorter intervals (roughly 5,000–7,500 miles) are advised.
Always follow the specific intervals listed in your owner’s manual for your vehicle’s engine and regional guidelines. The exact numbers can vary by market and vehicle configuration.
Practical tips for maintaining oil health
- Use the recommended grade and API/ACEA specifications for your engine. - Use a factory-recommended filter. - Keep to the stated oil change intervals, or sooner if you operate in severe conditions (towing, extreme heat, dusty environments). - When in doubt, consult a dealer or a qualified technician who can pull up your exact VIN-based specs.
Summary
The 2020 Jeep Gladiator uses 0W-20 synthetic oil for the 3.6L gasoline engine and 5W-40 full-synthetic oil for the 3.0L EcoDiesel. Gasoline engines typically hold about 6 quarts; diesels require more oil, around 7–8 quarts. Change intervals vary by engine and conditions, with around 7,500 miles for the gas engine and up to 10,000 miles for the diesel under normal driving. Always verify by checking the owner’s manual or the oil fill cap on your specific Gladiator.