Quick answer
Chrysler, Jeep, Ram and Dodge coolant: recent Mopar manuals specify OAT coolant to MS.90032, and Mopar sells it as 10-Year/150,000-Mile OAT (concentrate MS-90032, 50/50 MS-12106). Mopar says not to mix it with HOAT or "globally compatible" coolant. Other vehicles may specify MS-9769, so check yours.
Chrysler, Jeep, Ram, Dodge coolant at a glance
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What coolant does Chrysler, Jeep, Ram & Dodge use?
- The 2022 Ram 2500/3500 owner's manual specifies Organic Additive Technology (OAT) coolant "conforming to MS.90032". It warns that OAT "should not be mixed with Hybrid Organic Additive Technology (HOAT) engine coolant or any 'globally compatible' coolant". [1]
- The same manual says the vehicle "has not been designed for use with propylene glycol-based engine coolant". [1]
- Mopar's 2026 catalog lists 10-Year/150,000-Mile OAT coolant as concentrate to MS-90032 (68163848AB) and 50/50 prediluted to MS-12106 (68163849AB), and calls the two interchangeable. [2]
- The Mopar eStore describes 68163848AC as "OAT Concentrate. Standard MS-9769", which differs from the catalog. Coolant makers list MS-9769 on HOAT products such as Zerex G05, so check the standard printed in your manual. [3]
How Chrysler, Jeep, Ram & Dodge coolant changed over the years
Chrysler, Jeep, Ram and Dodge vehicles used orange or pink HOAT coolant for about a decade, then switched to purple OAT from the 2013 model year [4]. Mopar is unusually blunt that the two must not be mixed [1].
| Period | Coolant | Colour | Interval / note |
|---|---|---|---|
| 2000–2012 model years | Mopar HOAT (5 yr / 100,000 mi), e.g. 68048953AB | Orange factory fill / pink service | Per TSB 07-004-12 [4] |
| 2013 model year onward | Mopar OAT (10 yr / 150,000 mi), 68163848AA | Purple | Except MK 2.2L and JC 2.0L diesels [4] |
| Current catalog | OAT concentrate MS-90032 / 50/50 MS-12106 | Not stated | Interchangeable per Mopar [2] |
Chrysler, Jeep, Ram & Dodge coolant chemistry
Mopar's 2022 Ram manual says the vehicle "has not been designed for use with propylene glycol-based engine coolant" [1], so ethylene glycol OAT is the intended base.
Known Chrysler, Jeep, Ram & Dodge coolant issues
- The TSB lists what happens when HOAT and OAT are mixed: an ammonia smell, debris in the coolant, and aluminium pipes turning black [4].
- The Ram manual calls for at least a 50% coolant mix and no more than 70%, with distilled water only. It notes that some vehicles need special tools to fill the system correctly, and says to flush if HOAT and OAT have been mixed [5].
Genuine Chrysler, Jeep, Ram & Dodge coolant we list
All genuine Mopar products and the details Mopar publishes are on the Mopar coolant brand page.
Aftermarket coolants listing a Chrysler, Jeep, Ram & Dodge code
21 products in our data list one of these codes, per their maker:
Codes these products list (tap for every match)MS-7170 14MS-12106 9MS-9769 9
Plus 11 more in the finder.
Coolants whose maker mentions Chrysler, Jeep, Ram & Dodge
5 more only mention Chrysler, Jeep, Ram & Dodge in application text, which is weaker than a code:
Other car makes
Other car makes
A Chrysler, Jeep, Ram & Dodge spec does not carry over to other brands. Also have a car from Tesla or GM / Chevrolet? Look up Volvo and Ford too, and read can you mix coolant? before sharing one bottle. All makes: coolant by car make.
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Our best coolant for Jeep, Ram & Dodge page puts the genuine coolant and the aftermarket products that list a matching code side by side, with buying links. It is not a test or ranking.
Frequently asked questions
What colour is Mopar OAT coolant?
The TSB describes the 10-year/150,000-mile OAT coolant as purple, replacing orange or pink HOAT.
What happens if HOAT and OAT are mixed in a Jeep or Ram?
Chrysler's TSB lists an ammonia smell, debris and aluminium pipes turning black. The Ram manual says to flush the system.
How long does Mopar OAT coolant last?
10 years or 150,000 miles, per the TSB and the 2022 Ram manual.
Is Coolant.com affiliated with Chrysler, Jeep, Ram & Dodge?
No. We are independent of Chrysler, Jeep, Ram & Dodge.
Chrysler, Jeep, Ram & Dodge coolant part numbers and spec codes
Quote these numbers at a parts counter. Each comes from the Chrysler, Jeep, Ram & Dodge listing linked in its row, and your manual still decides.
| Genuine product | Part no. | Code shown | Listing |
|---|---|---|---|
| Mopar Coolant Antifreeze, US (OAT Concentrate) | 68163848AC (supersedes 68104496AA, 68163848AA, 68163848AB) | MS-9769 | store.mopar.com |
| Mopar 10-Year/150,000-Mile OAT Coolant 50/50 Prediluted | 68163849AB | MS-12106 | dealers-mopar.com |
Repair manuals & accessories
Repair manual for your car
Haynes repair manual for Jeep, Dodge, Ram and Chrysler
Step-by-step procedures, including draining, refilling and bleeding the cooling system. Manuals cover specific models and years: check the coverage on the cover before you buy.
Examples of the tool type, not a test or ranking by us. Check fit and instructions before you buy. See the full cooling system tools guide.
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How we source this page
- Facts come from manufacturer pages, datasheets, owner's manuals and standards bodies, linked under Sources.
- We do not test products, and no brand pays to be listed or ranked. Advertising and affiliate links are labelled and never change the data.
- Anything we could not find is marked "not published" rather than guessed. Spotted an error? Tell us.
Sources
Sources
- Mopar owner's manual (2022 Ram 2500/3500): Selection of Coolant
- Mopar 2026 Vehicle Lubricant & Chemical Catalog (PDF)
- Mopar eStore: Coolant Antifreeze, US (68163848AC)
- Chrysler TSB 07-004-12 Rev. A: OAT coolant introduction (NHTSA)
- Mopar owner's manual (2022 Ram 2500/3500): Adding Coolant
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