--- title: "Ram 1500 Transmission Fluid & Coolant" description: "How the Ram 1500 fluids specification changed from 2012 to 2025, compared generation by generation. Which transmission fluid, coolant, and brake fluid the Ram 1500 takes, with capacities and the specifications each one has to meet. Transmission: ZF-based TorqueFlite 8-speed (8HP75/8HP75-LCV, 870RE on TRX): Mopar ZF 8&9 Speed ATF (68218925AB), sealed, no dipstick, level set by temperature/overflow procedure. No scheduled change in normal service; ~60,000 mi change is common practice for heavy towing.. Coolant: Mopar OAT coolant (MS.90032); 10-yr/150k first change, then every 5 yr. eTorque and Hurricane trucks have additional low-temp cooling loops, bleed per service info.." url: "https://whichcarparts.com/cars/ram/1500/fluids" updated: "2026-08-20" --- # Ram 1500 Fluid Types and Capacities The specification is not the same across every year we cover, the table below shows exactly where it changes. ## Has the Ram 1500 fluids specification changed by year? | Model years | Transmission | Coolant | Brake | | --- | --- | --- | --- | | [2019-2025](https://whichcarparts.com/cars/ram/1500/2019-2025/fluids) | ZF-based TorqueFlite 8-speed (8HP75/8HP75-LCV, 870RE on TRX): Mopar ZF 8&9 Speed ATF (68218925AB), sealed, no dipstick, level set by temperature/overflow procedure. No scheduled change in normal service; ~60,000 mi change is common practice for heavy towing. | Mopar OAT coolant (MS.90032); 10-yr/150k first change, then every 5 yr. eTorque and Hurricane trucks have additional low-temp cooling loops, bleed per service info. | DOT 4 brake fluid (check the reservoir cap label; flush every 2-3 years is good practice) | | [2012-2018](https://whichcarparts.com/cars/ram/1500/2012-2018/fluids) | 8-speed 845RE/8HP70 (2013+, V6/HEMI): Mopar ZF 8&9 Speed ATF (68218925AB), sealed unit, level checked at temperature, no dipstick. 65RFE/66RFE 6-speed (2012-2018 HEMI/4.7): Mopar ATF+4. 42RLE 4-speed (2012 3.7L): ATF+4. | 2013+: Mopar OAT coolant (purple, MS.90032, 10-yr/150k first change). 2012: HOAT (MS-9769, 5-yr/100k). Do not mix the two. | DOT 3 brake fluid | ## Full specifications by generation The fluids on a Ram 1500 is set by its generation, not its model year, so each generation has one page carrying the complete figures, part numbers and fitment notes for every year it covers. - [2019-2025 Ram 1500 Fluids](https://whichcarparts.com/cars/ram/1500/2019-2025/fluids) - [2012-2018 Ram 1500 Fluids](https://whichcarparts.com/cars/ram/1500/2012-2018/fluids) ## Ram 1500 fluids: common questions ### What transmission fluid does a Ram 1500 take? ZF-based TorqueFlite 8-speed (8HP75/8HP75-LCV, 870RE on TRX): Mopar ZF 8&9 Speed ATF (68218925AB), sealed, no dipstick, level set by temperature/overflow procedure. No scheduled change in normal service; ~60,000 mi change is common practice for heavy towing.. Transmission fluid specifications are not interchangeable. Friction modifiers differ between them, and the wrong fluid causes shudder long before it causes failure. ### What coolant does a Ram 1500 use? Mopar OAT coolant (MS.90032); 10-yr/150k first change, then every 5 yr. eTorque and Hurricane trucks have additional low-temp cooling loops, bleed per service info.. ### What brake fluid does a Ram 1500 take? DOT 4 brake fluid (check the reservoir cap label; flush every 2-3 years is good practice). ### What differential fluid does a Ram 1500 take? Rear axle synthetic 75W-85 GL-5 (75W-140 for heavy towing per tag); front axle 75W-85 GL-5. ## Sources - [FCA media, 2021 Ram 1500 TRX specifications](https://s3.amazonaws.com/chryslermedia.iconicweb.com/mediasite/specs/2021_RAM_1500_TRX_Specificationsncds40e91jnt64taolkbbpi9eq.pdf) - [NHTSA recall 22V-904, tailgate striker (Part 573 report, FCA ZB8)](https://static.nhtsa.gov/odi/rcl/2022/RCLRPT-22V904-2829.PDF) - [FCA Safety Recall V17 / NHTSA 19V-142, 48-volt ground cable fastener (oemdtc)](https://chrysler.oemdtc.com/1318/safety-recall-v17-nhtsa-19v-142-48-volt-ground-cable-fastener-2019-ram-1500/) - [Diesel Hub, 3.0L EcoDiesel oil change guide (gen-3: 8.5 qt, 68507598AA)](https://www.dieselhub.com/maintenance/ecodiesel-oil-change-guide.html) - [fueleconomy.gov, 2022 Ram 1500 EPA ratings](https://www.fueleconomy.gov/feg/bymodel/2022_Ram_1500.shtml) - [fueleconomy.gov, 2025 Ram 1500 EPA ratings (Hurricane SO/HO)](https://www.fueleconomy.gov/feg/bymodel/2025_Ram_1500.shtml) - [SD Wheel, 5th-gen Ram 1500 fitment guide (6x139.7, 130 ft-lb)](https://www.sdwheel.com/blogs/1278/5th-gen-ram-fitment-guide) - [Mopar eStore, 68414387AA DT engine air filter](https://www.moparoriginalparts.com/part-ymm/2024-ram-1500-dt-engine-air-filter.html) - [Mopar eStore, 53011248AB TRX 6.2L air filter](https://store.mopar.com/oem-parts/mopar-air-filter-53011248ab) - [Mopar eStore, 68683357AA Hurricane HO oil filter (supersedes 68466307AB)](https://store.mopar.com/oem-parts/mopar-engine-oil-filter-68683357aa) - [Interstate Batteries, Ram 1500 H7/94R fitment](https://www.interstatebatteries.com/vehicle/dodge/dodge-ram-1500) - [Mopar owner info, oil life reset procedure (accelerator method)](https://vehicleinfo.mopar.com/assets/publications/en-us/Ram/2022/2500_3500/om_html/GUID-129DF5D9-F994-45FC-9B5E-504D7FE75BC6.html) - [Blauparts, Ram 1500 TRX 0W-40 (MS-12633) oil change kit](https://www.blauparts.com/ram-1500-trx-oil-change-kit-62l-v8-0w40-ravenol.html) ## Find your exact 1500 - [2025](https://whichcarparts.com/cars/ram/1500/2025) - [2024](https://whichcarparts.com/cars/ram/1500/2024) - [2023](https://whichcarparts.com/cars/ram/1500/2023) - [2022](https://whichcarparts.com/cars/ram/1500/2022) - [2021](https://whichcarparts.com/cars/ram/1500/2021) - [2020](https://whichcarparts.com/cars/ram/1500/2020) - [2019](https://whichcarparts.com/cars/ram/1500/2019) - [2018](https://whichcarparts.com/cars/ram/1500/2018) - [2017](https://whichcarparts.com/cars/ram/1500/2017) - [2016](https://whichcarparts.com/cars/ram/1500/2016) - [2015](https://whichcarparts.com/cars/ram/1500/2015) - [2014](https://whichcarparts.com/cars/ram/1500/2014) - [2013](https://whichcarparts.com/cars/ram/1500/2013) - [2012](https://whichcarparts.com/cars/ram/1500/2012) More Ram 1500 guides: - [Oil & filter](https://whichcarparts.com/cars/ram/1500/oil) - [Battery](https://whichcarparts.com/cars/ram/1500/battery) - [Tires & wheels](https://whichcarparts.com/cars/ram/1500/tires) - [Wiper blades](https://whichcarparts.com/cars/ram/1500/wipers) - [Air & cabin filters](https://whichcarparts.com/cars/ram/1500/filters) - [Bulbs](https://whichcarparts.com/cars/ram/1500/bulbs) - [Brakes](https://whichcarparts.com/cars/ram/1500/brakes) - [Service schedule](https://whichcarparts.com/cars/ram/1500/service-schedule) - [Problems & reliability](https://whichcarparts.com/cars/ram/1500/common-problems) - [Oil light reset](https://whichcarparts.com/cars/ram/1500/oil-reset) - [Key fob battery](https://whichcarparts.com/cars/ram/1500/key-fob-battery) - [Specs](https://whichcarparts.com/cars/ram/1500/specs) Specifications vary with engine option, production date, and market.