2025 Jeep Gladiator Fluid Type Specs

Staying on top of your 2025 Jeep Gladiator's fluid maintenance is crucial for its longevity, performance, and reliability, whether you're tackling off-road trails or cruising the highway. Using the correct factory-specified fluids helps ensure all systems operate as intended, protecting against premature wear and costly repairs. This comprehensive guide details every factory-spec fluid required for your 2025 Jeep Gladiator.

Quick reference

Engine Oil

For the 2025 Jeep Gladiator equipped with the 3.6L Pentastar V6 engine, the factory fill engine oil is SAE 0W-20. It is crucial to use oil that meets API SP specification and, specifically, Mopar MS-6395. This Mopar specification ensures the oil has been tested and approved for optimal performance and protection in your Gladiator's engine. The 3.6L V6 typically requires about 7.0 quarts during an oil change, but always verify with your dipstick after filling.

Intervals: Generally, engine oil and filter should be changed every 10,000 miles or 12 months, whichever comes first, under normal driving conditions. However, if you frequently tow, operate in dusty conditions, or engage in extensive off-roading, more frequent oil changes (e.g., every 5,000 miles or 6 months) are recommended. Refer to your owner's manual for the severe service schedule.

Common Pitfalls: Never use an oil that does not meet the MS-6395 specification, even if it's the correct viscosity. Using an incorrect oil can lead to premature engine wear, reduced fuel economy, and potential warranty voidance. Always check for the API Starburst symbol on the oil container, indicating it meets the latest API standards.

Engine Coolant

The 2025 Jeep Gladiator uses Mopar Antifreeze/Coolant 10 Year/150,000 Mile (Purple), which is an Organic Acid Technology (OAT) coolant. This coolant meets the stringent Mopar MS-90032 specification. The purple color is a visual indicator of its type. The capacity for the 3.6L V6 is approximately 14.0 quarts.

Intervals: This long-life coolant is designed for extended service intervals, typically 10 years or 150,000 miles, whichever comes first. However, it's good practice to inspect the coolant level and condition periodically.

Common Pitfalls: Mixing different types of coolants, especially OAT with HOAT (Hybrid Organic Acid Technology) or IAT (Inorganic Acid Technology) coolants, can lead to chemical reactions that may cause gelling, corrosion, and severe damage to your cooling system components. Always use Mopar MS-90032 compliant OAT coolant. If you're unsure of what coolant is currently in your system, it's best to perform a full flush and refill with the correct type.

Automatic Transmission Fluid

For the 2025 Jeep Gladiator equipped with the 8-speed automatic transmission (ZF 8HP series such as the 850RE), the correct fluid is Mopar ZF 8&9 Speed Automatic Transmission Fluid, which meets the Mopar MS-9602 specification. The total fill capacity for an 850RE transmission is around 8.8 quarts, but capacity can vary for a drain and refill. Always consult the service manual for precise refill procedures.

Intervals: Under normal driving conditions, the transmission fluid is often considered