Automatic Transmission | 2020-2023 Jeep 3.0L EcoDiesel

Automatic Transmission Components for 2020–2023 Jeep 3.0L EcoDiesel

The 3.0L EcoDiesel found in the 2020–2023 Jeep Gladiator and Grand Cherokee is known for its smooth torque delivery and impressive efficiency, but the automatic transmission works hard to keep up with the demands of towing, off-roading, and daily driving. Maintaining proper transmission temperature and fluid quality is critical to ensure long-term reliability and consistent shifting performance.

Start with protection and prevention. Upgrading the cooling system with an ATS universal transmission cooler or Mishimoto auxiliary cooler helps regulate fluid temperature and reduce stress on internal components. Lower transmission temperatures mean smoother shifts, improved clutch life, and reduced risk of overheating when towing or tackling tough terrain.

Keeping transmission fluid clean and stable is just as important. Using SunCoast transmission fluid provides enhanced thermal stability and lubrication compared to factory-fill options, ensuring smoother operation under extreme heat and heavy loads. Regular fluid changes are one of the simplest and most effective ways to preserve transmission performance and longevity.

If you notice delayed shifts, slipping under load, or higher-than-normal fluid temps, it’s time for a service or upgrade. A well-maintained transmission keeps your EcoDiesel performing at its best—efficient, responsive, and ready for whatever you throw at it.

Why Maintain or Upgrade Your 3.0L EcoDiesel Transmission?

• Reduce Heat: Keep transmission temps stable during towing or off-road use.

• Extend Lifespan: Prevent premature wear and protect internal components.

• Improve Shifting: Maintain smooth, consistent gear changes under load.

• Enhance Reliability: Quality fluid and cooling upgrades protect against failure.

• Optimize Performance: Ensure dependable operation in any driving condition.

Popular Transmission Upgrades

• SunCoast Transmission Fluid

• ATS Universal Transmission Cooler

• Mishimoto Transmission Cooler

• Transmission Fluid Service Kits & Accessories

Protect your 2020–2023 Jeep 3.0L EcoDiesel with premium automatic transmission components from Diesel Power Products. Whether you’re maintaining factory reliability or adding extra cooling capacity for demanding use, our selection helps keep your EcoDiesel shifting smoothly and performing with confidence mile after mile.