The standard coolant for 2018 Jeep models is Mopar Antifreeze/Coolant Type 2, a HOAT formulation, typically sold as a 50/50 premixed solution. Always verify the exact requirement for your model and engine in the owner's manual or on the under-hood label.
This article outlines the official specification, how to identify the correct product, and practical tips for purchasing and applying the right coolant to keep your Jeep’s cooling system running smoothly.
The official specification for 2018 Jeep models
Jeep’s guidance centers on using Mopar Antifreeze/Coolant Type 2 (HOAT) for most 2018 models. This long-life formulation protects aluminum components and works with the materials used throughout FCA engines. It is commonly available as premixed 50/50 or as concentrate to be diluted with distilled water. Use only Type 2 approved coolants to avoid compatibility issues.
- Mopar Antifreeze/Coolant Type 2, a HOAT formulation
- Available as premixed 50/50 or as concentrate to be diluted with distilled water
- Only use coolants that explicitly meet Mopar Type 2/Jeep specifications; avoid non-approved formulas such as Dex-Cool unless your manual says it’s acceptable
In practice, sticking with Mopar Type 2 HOAT covers the vast majority of 2018 Jeep applications. Always check your specific model’s manual or the under-hood label for any exceptions or engine-specific notes.
Model-specific notes for 2018 Jeep models
While most 2018 Jeep models share the same Type 2 HOAT requirement, always confirm by engine type and option package. The following popular 2018 Jeep models typically align with Mopar Type 2 HOAT, but cross-check your vehicle’s documentation.
Wrangler (JL)
Uses Mopar Type 2 HOAT coolant; follow the premixed or concentrate instructions on the product label and ensure proper dilution if using concentrate.
Grand Cherokee (WK2)
Typically requires Type 2 HOAT coolant; verify with the owner’s manual or the under-hood sticker, especially if the vehicle has a special engine option or export variant.
Cherokee (KL) and Compass (MP)
Generally compatible with Mopar Type 2 HOAT coolant; always double-check based on the exact engine code and production year.
Renegade (BU/2015–2021 era)
Commonly uses the same Type 2 HOAT specification; consult the manual for any model-year nuances or engine differences.
For any Jeep model not explicitly listed here or when in doubt, rely on the service label under the hood and the owner’s manual to confirm the correct coolant specification.
Practical guidance for buying and applying coolant
Before purchasing or mixing coolant, keep these practical points in mind to ensure proper compatibility and long-term cooling system health.
- Always choose Mopar Antifreeze/Coolant Type 2 HOAT if possible, in premixed 50/50 or as a concentrate to be diluted per label instructions
- Ensure the product is labeled as meeting Mopar Type 2 or Jeep specification; avoid non-approved formulas unless the manual specifically allows them
- Do not mix different coolant families (e.g., HOAT with non-HOAT or Dex-Cool) unless the manual explicitly permits it
Following these guidelines helps prevent corrosion, deposits, and potential coolant system failures. If you’re unsure about the correct product for your exact vehicle, consult a Jeep dealership or an authorized service center.
Summary
For most 2018 Jeep models, the recommended coolant is Mopar Antifreeze/Coolant Type 2 HOAT, typically available as premixed 50/50 or as concentrate to mix with distilled water. Verify your engine variant and model in the owner’s manual or on the under-hood label, and avoid using unapproved formulas. By sticking to the approved Type 2 HOAT coolant and following proper mixing instructions, you help protect your Jeep’s cooling system and engine performance.