The Ram 1500 uses Mopar Antifreeze/Coolant Type 2 (HOAT), typically sold premixed in a 50/50 ratio and designed to meet FCA MS-12106 specifications. Do not use Dex-Cool or generic universal coolants unless they explicitly meet MS-12106 Type 2 for FCA vehicles.
Understanding the specification and its implications
Chrysler/FCA vehicles, including Ram pickups, rely on a Hybrid Organic Acid Technology (HOAT) coolant categorized as Type 2. The official Mopar/Chrysler catalog lists Mopar Antifreeze/Coolant Type 2 as the recommended option and notes compatibility with MS-12106 Type 2 HOAT. Using the wrong coolant can affect corrosion protection and cooling efficiency, and may affect warranties.
What HOAT Type 2 means
HOAT Type 2 combines organic acids with inorganic inhibitors to provide durable corrosion protection across cooling-system metals. For Ram 1500 engines, Type 2 HOAT is the tested and recommended formulation, ensuring compatibility with gaskets, seals, and cooling passages used in FCA engines.
Coolant options and how to choose
Before buying, look for the MS-12106 Type 2 HOAT designation on the bottle and confirm the product is premixed 50/50 or is a concentrate you can mix to 50/50 with distilled water. The Ram 1500's cooling system is designed for HOAT Type 2 coolants, not Dex-Cool (GM) or standard universal formulas that do not specify FCA compatibility.
Common options that meet FCA/MS-12106 Type 2 HOAT or are the official Mopar product include:
- Mopar Antifreeze/Coolant Type 2 HOAT, premixed 50/50
- Other HOAT antifreeze/coolant labeled as MS-12106 Type 2 compatible with FCA vehicles
- Concentrate HOAT coolant that you mix to 50/50 with distilled water and that explicitly lists MS-12106 Type 2 compatibility
- Always avoid Dex-Cool (GM) or universal coolants unless they explicitly state FCA MS-12106 Type 2 compatibility
When in doubt, the safest choice is Mopar Type 2 HOAT premixed coolant or a third-party HOAT coolant that clearly lists MS-12106 Type 2 compatibility for FCA vehicles and is labeled for Ram engines.
Maintenance: replacement intervals and tips
Cooling-system service intervals can vary by model year and engine option. For many Ram 1500s, service intervals for HOAT Type 2 coolant are commonly around every 5 years or 100,000 miles, whichever comes first, but always verify in your owner's manual or with a dealer. If the system shows signs of leaks, overheating, or discoloration, a coolant flush-and-fill may be necessary.
To help you plan, here are basic guidelines you can follow:
- Check the owner's manual for the exact coolant specification and replacement interval.
- Inspect the coolant reservoir level and color; if it is low or discolored, have it tested and refilled with the correct Type 2 HOAT coolant.
- Do not mix different coolant types; if you must top off, use the same specification (MS-12106 Type 2 HOAT) and brand if possible.
- When performing a complete drain and refill, flush the system to remove old coolant and debris.
- Dispose of old coolant properly and never pour it down the drain.
Conclusion: Adhering to the correct Type 2 HOAT specification (MS-12106) is essential for protection against corrosion and proper cooling in Ram 1500 engines. Mopar Type 2 HOAT premixed coolant is a straightforward, reliable choice.
Where to buy and how to store
Buy from authorized Mopar parts dealers, automotive retailers, or the official Ram parts catalog. Store coolant in a cool, ventilated place and keep it tightly sealed to preserve its chemical stability; never mix with other fluids or allow contamination.
Summary
The Ram 1500 uses Mopar Antifreeze/Coolant Type 2 HOAT, premixed 50/50, that meets FCA MS-12106. Choose a HOAT Type 2 coolant that explicitly lists MS-12106 Type 2 compatibility, avoid Dex-Cool and unlisted universal formulas, and follow the vehicle's manual for replacement intervals and service recommendations.
What coolant does a 2014 Ram 1500 5.7 Hemi take?
ZEREX – G-05 Formula 50/50 Pre-Mixed RTU Antifreeze / Coolant, 1 Gallon (Part No. ZXG05RU1)
What color antifreeze does the Dodge Ram 1500 use?
Prestone – MAX Original Equipment Antifreeze + Coolant: American Purple, 50/50 Ready To Use, 1 Gallon (Part No. AF6900) Prestone MAX antifreeze + coolant uses Advanced Original Equipment Technology to provide MAXIMUM ENGINE PROTECTION in all Jeep, Ram, Dodge & Chrysler vehicles from 2000 & newer, guaranteed.
What color does Dodge use for coolant?
What Kind of Antifreeze Do I Need?
| Color | Manufacturers/Compatibility |
|---|---|
| Yellow | All vehicles |
| Turquoise | Audi, BMW, and other European manufacturers |
| Pink or Blue | Audi, Porsche, and other European models |
| Purple | Stellantis vehicles (Jeep, Chrysler, Dodge) |
Does Dodge use special coolant?
Every car manufacturer, including Dodge has developed its own coolant or requires a specific coolant that is unique to individual years and models. There are several colors of coolants to help distinguish each including green, purple red, yellow, blue, and orange.