The 2009 Dodge Ram 1500 uses a long-life HOAT antifreeze/coolant designed for aluminum engines: a Mopar-approved 50/50 premixed coolant or an aftermarket HOAT that meets Chrysler MS-9769 specifications.
Overview of Ram 1500 cooling needs
Ram 1500 models from 2009 share a cooling system designed to protect aluminum components and maintain optimal operating temperatures. The key requirement is a silicate-free, ethylene glycol-based HOAT coolant. Using the wrong type or mixing incompatible formulas can lead to deposits, corrosion, or reduced cooling efficiency. Always consult the owner's manual or a dealership for the exact standard for your engine variant.
Engine options in 2009 Ram 1500
In 2009, the Ram 1500 offered several gasoline engines, including the 3.7L V6, 4.7L V8, and 5.7L Hemi. Regardless of the engine choice, the recommended coolant type remains HOAT (silicate-free) with a Mopar long-life formulation or an aftermarket product that meets Chrysler MS-9769. Diesel variants, if present on specific trim lines, may require a different specification.
Below are compatible coolant options to consider, with an emphasis on OEM compatibility and industry standards:
The following options are compatible with the Ram 1500's cooling system. Choose OEM or an aftermarket HOAT coolant that meets Chrysler MS-9769 specifications.
- Mopar Antifreeze/Coolant 50/50 Premixed HOAT (Chrysler MS-9769 compliant) – OEM option tailored for Ram and other Chrysler vehicles.
- Aftermarket HOAT coolant labeled as "silicate-free" and "meets Chrysler MS-9769" or "MS-9769 equivalent" – a reliable alternative when Mopar is unavailable.
- Premixed 50/50 HOAT coolant that explicitly states compatibility with Chrysler MS-9769 on the label – ensure it is HOAT and silicate-free.
Concluding: When selecting a coolant, verify MS-9769 compatibility, avoid mixing conventional green IAT or Dex-Cool formulations with HOAT unless the manufacturer specifically allows it, and follow proper drain-and-fill procedures if changing coolant types.
Summary
For a 2009 Dodge Ram 1500, use Mopar long-life antifreeze/coolant (50/50 premixed HOAT) or an aftermarket HOAT coolant that meets Chrysler MS-9769. This ensures compatibility with the vehicle’s aluminum cooling system and maintains proper cooling performance. Always check the owner’s manual or consult a dealer if you’re unsure about the exact specification for your engine.