The Ram 1500 with a 5.7L Hemi uses Mopar Antifreeze/Coolant Type 2 HOAT, typically sold premixed in a 50/50 solution with water. Always verify the exact specification in your owner's manual or on the under-hood label.
Why the correct coolant matters
Using the wrong coolant can corrode aluminum components, reduce cooling efficiency, or affect warranty coverage. Chrysler/ Ram engines rely on a specific Hybrid Organic Acid Technology (HOAT) Type 2 formulation designed for their cooling systems, which differs from GM Dex-Cool or generic universal formulas.
What coolant does the Ram 1500 5.7 take?
Before listing options, note that you should use either the OEM Mopar Type 2 HOAT coolant or a commercially available HOAT coolant that explicitly states Chrysler/Jeep Type 2 compatibility. Do not mix coolant types and avoid using plain water only.
- Mopar Antifreeze/Coolant Type 2 HOAT (typically sold premixed as 50/50 with distilled water).
- High-quality aftermarket HOAT coolant that is labeled to meet Chrysler/Jeep Type 2 specifications (look for Type 2 or Chrysler/Jeep approval on the label).
- If you buy concentrate, dilute only with distilled water according to the product’s instructions; never use tap water.
Using the correct coolant protects the engine and cooling system components, avoids corrosion, and maintains proper temperature control. Always confirm the exact specification in the owner's manual and follow the recommended service interval.
Maintenance tips for replacement
When replacing coolant, ensure the system is flushed and all air is purged. Use the proper mix ratio and a coolant that explicitly meets Chrysler/Jeep Type 2 HOAT requirements. If you’re unsure, have a dealer or qualified shop perform the service.
Summary
For the Ram 1500 5.7, use Mopar Antifreeze/Coolant Type 2 HOAT, typically in a 50/50 premixed solution. If using an aftermarket product, ensure it is labeled as meeting Chrysler/Jeep Type 2 HOAT specifications and avoid Dex-Cool or non-HOAT formulas. Always consult the owner’s manual or a dealer for the exact specification and service interval.