The 2020 Jeep lineup generally requires a HOAT (Hybrid Organic Acid Technology) long-life antifreeze/coolant. The recommended choice is Mopar Antifreeze/Coolant 5 Year/100,000 Mile HOAT premixed 50/50. If Mopar isn’t available, you can use a HOAT coolant that meets Chrysler’s MS-9769 specification and is premixed to 50/50; always verify with your owner’s manual or under-hood label for your exact model and engine.
What to use and how to source it
To keep the cooling system compatible and protect the engine, look for products labeled HOAT (Hybrid Organic Acid Technology) and rated for Jeep/Chrysler use. The exact specification can vary by model, so refer to the manual or the under-hood label for your vehicle.
- Mopar Antifreeze/Coolant 5 Year/100,000 Mile HOAT, premixed 50/50 (the factory-recommended option).
- Any HOAT coolant that explicitly meets Chrysler MS-9769 specification and is premixed to 50/50, if Mopar-branded product isn’t available.
- If you choose a concentrate, mix it with distilled water to the correct 50/50 ratio before adding to the cooling system.
- Avoid using Dex-Cool or universal coolants that are not labeled to meet Chrysler/Jeep specifications, as they can cause deposits or cooling-system issues in some engines.
Following these guidelines helps protect the engine from corrosion and overheating and keeps you aligned with Jeep’s maintenance specifications.
Maintenance steps for refilling or replacing coolant
When you need to drain and refill the cooling system, follow these safe, standard steps so you don’t introduce air pockets or leaks.
- Park on level ground and let the engine cool completely before opening the cooling system; never service a hot engine.
- Place a drain pan beneath the radiator drain valve or petcock and open the drain to remove old coolant.
- Close the drain and flush if needed, then fill with 50/50 HOAT premix (or premixed product) to the full cold fill line.
- With the cap off and the engine running, allow the thermostat to open and bleed any air from the system (some Jeep models require a dedicated bleed procedure).
- Top off the coolant to the correct level when the engine reaches operating temperature and the system has bled; recheck after a few hours of driving.
- Dispose of used coolant properly and keep it out of reach of children and pets.
Always consult your owner's manual or a qualified mechanic for model-specific bleeding procedures and capacities, as Jeep variations can exist even within the 2020 lineup.
Summary
In short, a 2020 Jeep generally uses HOAT long-life antifreeze/coolant, with Mopar 5 Year/100,000 Mile HOAT premixed 50/50 as the standard recommendation. If Mopar isn’t available, choose a HOAT coolant that meets Chrysler MS-9769 and is premixed to 50/50, and avoid Dex-Cool or non-Chrysler-approved formulas. Always verify with the manual or under-hood sticker for your specific model and engine, and follow proper refill and disposal practices.