Complete Oil Specifications
The owner’s manual for the 2021 Jeep Gladiator recommends 5W-40 synthetic engine oil such as Mopar that meets Material Standard MS-12991, with the API SN engine oil category required for the 3.0L Diesel engine. Engine oil capacity is 9 quarts (8.5 liters) with the filter.
When to Change the Oil
The Gladiator has an automatic oil change indicator. When “Oil Change Required” appears, have the vehicle serviced within the next 500 miles (805 km). For the diesel engine the manual also sets a hard limit: oil change intervals should never exceed 10,000 miles (16,000 km) or 12 months, whichever comes first.
Oil Filter
The manual recommends a Mopar engine oil filter; if one isn’t available, use only filters that meet or exceed SAE/USCAR-36 filter performance requirements. It doesn’t give a part number.
What We Couldn’t Confirm
- Capacity without the filter, OEM oil filter part number and drain plug torque. None appear in the owner’s manual.
- Engine family name. The manual calls it the “3.0L Diesel Engine”.
FAQs
What oil does a 2021 Jeep Gladiator 3.0L Diesel take? 5W-40 synthetic engine oil such as Mopar that meets Material Standard MS-12991, with the API SN engine oil category required.
How much oil does the 3.0L Diesel hold? 9 quarts (8.5 liters) with the filter.
How often should I change the oil? When the oil change indicator says so, and never more than 10,000 miles or 12 months, whichever comes first.