ServlogUpdated 2026-07-11
Ram 2500 Transmission Fluid: Change Interval
Compiled & reviewed by Nikolai Tsyrenov · Updated 2026-07-11
When to change the transmission fluid on a 2019-2025 (DJ) Ram 2500.
In short: Ram 2500 transmission fluid: Auto: ~60,000 mi normal; ~30,000 mi heavy towing/severe.
| Transmission Fluid interval | Auto: ~60,000 mi normal; ~30,000 mi heavy towing/severe |
|---|---|
| Engine / drivetrain | 6.4L HEMI V8 gas (primary) or 6.7L Cummins turbo-diesel; 5W-20 synthetic (gas); TorqueFlite/68RFE auto |
| Model years | 2019-2025 (DJ) |
Why it matters: Transmission fluid lubricates and cools the gearbox. "Lifetime fill" really means "lifetime of the warranty" — heat from towing, hills and stop-and-go traffic ages it much faster.
A drain-and-fill (not a flush) is the safe approach, especially on higher-mileage cars. Use ONLY the exact fluid spec for your transmission — the wrong fluid can ruin a CVT or automatic.
Ram 2500 note: The 6.4L HEMI gas V8 is the primary engine; the 6.7L Cummins turbo-diesel runs different intervals — longer monitor-managed oil changes plus its own fuel/water separator and diesel fuel filters (~every 15,000-20,000 mi). These are work trucks: towing and severe duty shorten oil, transmission and coolant intervals sharply, so log service against your actual duty cycle, not just the odometer.
FAQ
How often should you change the transmission fluid in a Ram 2500?
Auto: ~60,000 mi normal; ~30,000 mi heavy towing/severe.
Should I flush or drain-and-fill the transmission on a Ram 2500?
Prefer a drain-and-fill. A pressure flush on an old, never-serviced transmission can dislodge debris; a simple drain-and-fill (repeated if needed) is the gentler, widely recommended option.
Where can I check all Ram 2500 service intervals?
The full Ram 2500 maintenance schedule covers oil, tires, fluids, filters and major milestones for the 2019-2025 (DJ) model years.
← Full Ram 2500 maintenance schedule · Transmission Fluid intervals for all cars
General guidance — confirm against your Ram 2500 owner's manual.
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