What oil does a Jeep Gladiator take?

The 3.6L Pentastar V6 specifies 0W-20 full synthetic meeting MS-6395. The 3.0L EcoDiesel uses 5W-40 diesel oil meeting the spec on your oil cap. Confirm against your specific engine before filling.

Is Gladiator oil capacity the same as a Wrangler JL?

The 3.6L Pentastar capacity is similar (~5 quarts with filter), but the Gladiator's longer wheelbase and higher tow rating mean the engine often runs under heavier load. The EcoDiesel takes approximately 7 quarts with filter.

Does towing change Gladiator oil interval?

Yes. Towing near the Gladiator's rated capacity qualifies as severe duty — use a 5,000-mile interval rather than waiting for the oil life monitor to reach zero, especially when combined with off-road use.

Jeep Gladiator JT Oil Change Guide: Oil Type, Capacity & Interval

By Kian Chachi
July 30, 2026

Gladiator Oil Service: Wrangler Engine, Truck Duty Cycle

The Jeep Gladiator JT shares the JL Wrangler's engine lineup but adds a 5-foot bed, longer wheelbase, and a 7,650-pound tow rating. That means the same Pentastar or EcoDiesel runs under heavier load more often — towing campers on Friday, running trails on Saturday.

Correct oil and interval discipline keeps the bottom end healthy on a platform that asks its engine to do two jobs at once.

Oil Type and Capacity by Engine

Use 0W-20 full synthetic (MS-6395) for the Pentastar; 5W-40 diesel spec for the EcoDiesel. Replace the filter at every change.

3.6L Pentastar V6: ~5 quarts with filter
3.0L EcoDiesel: ~7 quarts with filter
Severe duty (tow + trail): 5,000-mile interval
Normal street: follow oil life monitor, but cap at 7,500 miles

When to Service Sooner

Short trips to the trailhead, idle-heavy traffic with a loaded bed, and max towing all qualify as severe duty. If you smell oil after hard climbs or see pressure drops at hot idle after a tow day, service immediately.

Learn more in our Ghost Rotors Gladiator brake kits.

Pair Every Oil Change With a Brake Inspection

The Gladiator's extra mass means brakes work harder on every descent — loaded or empty. Trail mud and towing heat compound pad wear faster than a Wrangler on tires alone. Inspect rotors and pads at every oil change.

Learn more in our Wrangler brake upgrade guide.

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Jeep Gladiator JT Oil Change Guide: Oil Type, Capacity & Interval

Gladiator Oil Service: Wrangler Engine, Truck Duty Cycle

Oil Type and Capacity by Engine

When to Service Sooner

Pair Every Oil Change With a Brake Inspection

Tow and Trail Need Better Brakes

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