In brief, you should use a HOAT (Hybrid Organic Acid Technology) coolant in an orange, Dex-Cool–style formulation, typically sold as a 50/50 premixed Chrysler/Jeep Type 2 coolant. Use Mopar Type 2 HOAT or an equivalent brand that explicitly states Chrysler/Jeep Type 2 compatibility, and avoid mixing with green or universal non-HOAT formulas.
The 2015 Jeep Patriot, like other FCA/Chrysler models, relies on a specific coolant formulation to protect the cooling system, radiator, and engine seals. Using the correct type helps prevent corrosion, coatings buildup, and overheating. Below is a practical guide to choosing the right coolant and keeping your cooling system in good shape.
Compatibility and what to buy
To ensure compatibility with your Patriot’s cooling system, look for products that meet Chrysler/Jeep Type 2 HOAT specifications. The information below covers common, dealership-approved options and how they relate to your vehicle.
- Mopar Antifreeze/Coolant Type 2 HOAT (orange, Dex-Cool style), premixed 50/50.
- Dex-Cool–compatible HOAT coolants from reputable brands (also orange, premixed 50/50) that specify Chrysler/Jeep Type 2 compatibility.
- Any HOAT coolant labeled as Chrysler/Jeep Type 2 HOAT and approved for FCA/Jeep vehicles (verify on the bottle or product page).
When selecting coolant, always verify that the product explicitly states Chrysler/Jeep Type 2 HOAT compatibility. If in doubt, ask a parts specialist or consult the owner's manual for the exact specification your engine requires.
Maintenance tips and replacement procedure
Refilling or replacing the coolant on a 2015 Patriot should be done with the engine cool and following proper draining and bleeding procedures to remove air from the system. If you’re not confident performing the service, have a qualified technician handle it.
- Allow the engine to cool completely, then place a drain pan under the radiator drain plug.
- Open the radiator drain and the engine block drain if available; drain the old coolant completely.
- Close all drains, then fill with the recommended 50/50 premixed HOAT coolant until the reservoir is full.
- Run the engine with the radiator cap off until the thermostat opens and the upper radiator hose becomes heat-warmed; monitor the level and top up as needed.
- Check for leaks around hoses, the radiator, and the reservoir; bleed the system if the vehicle exhibits any air pockets.
- Dispose of the old coolant properly at a recycling facility or automotive store that accepts used antifreeze.
Note: Do not mix green (glyphosate-based) or universal coolants with Dex-Cool–type fluids. If the cooling system has a mixture of different coolant types, a complete flush may be required to restore proper protection.
Summary
For a 2015 Jeep Patriot, use a HOAT coolant that is Chrysler/Jeep Type 2 compatible, typically the orange Dex-Cool style in a 50/50 premixed formula. Mopar Type 2 HOAT is a common, dealership-approved option, but many reputable brands offer compatible HOAT coolants. Always verify compatibility on the bottle and follow the vehicle manual or consult a professional for maintenance or replacement.