The quick answer: newer Ram models with electric power steering don’t use any power steering fluid, while Ram trucks with hydraulic steering typically require Mopar ATF+4 power steering fluid.
Power steering technology in Ram trucks has evolved: Ram began shifting to electric power steering (EPS) on many models around 2013, which eliminates the need for a PS fluid reservoir. If your Ram still uses hydraulic steering, you’ll want the correct ATF-based fluid. Always confirm the exact specification for your specific year, trim, and VIN by checking the owner's manual or contacting a Dodge/Ram dealer.
Hydraulic vs. electric power steering in Ram trucks
Understanding which system your Ram uses is essential for proper maintenance and fluid choices. The following points help identify the correct fluid path for your vehicle.
- Hydraulic power steering (older Rams and some heavy‑duty models): relies on a dedicated PS fluid, typically an ATF-based fluid. Mopar guidance has generally pointed to ATF+4 for recent hydraulic PS Rams.
- Electric power steering (EPS) (most 2013‑present Ram 1500 and many newer Rams): no power steering fluid reservoir or fluid to add; the system is electrically driven and maintenance differs from hydraulic PS.
- Some very late pre‑2013 Rams or specific variants may have unique service notes; always verify with the manual or dealer for your exact VIN.
Correctly identifying your system prevents misapplication of fluids and helps avoid steering-related issues.
What to use if you have hydraulic PS
If your Ram uses hydraulic power steering, use Mopar ATF+4 power steering fluid. Do not substitute with other ATF types unless the manual explicitly allows it.
- Fluid type: Mopar ATF+4 (Chrysler/Mopar power steering fluid) that meets the ATF+4 specification.
- Do not mix ATF+4 with other ATFs if there is a risk of contamination.
- When replacing fluid, ensure the system is properly bled to remove air and prevent steering wander or noise.
- If you’re unsure about your model year or variant, consult the owner's manual or contact a Dodge/Ram dealer for the exact specification for your VIN.
Following the official specification helps maintain steering performance and avoids potential damage to the PS system.
How to confirm the right fluid for your specific Ram
To avoid guessing and ensure you use the correct fluid, follow these steps:
- Check the owner's manual for the recommended power steering fluid specification corresponding to your year and trim.
- Inspect the power steering reservoir cap (if your model has one); some caps indicate ATF+4 or another specification.
- If the manual or cap is unclear, use your VIN to confirm the exact specification with a Dodge/Ram dealer or Mopar parts portal.
- If your vehicle has EPS (no PS fluid reservoir), you do not add PS fluid; maintain other fluids per schedule.
Verification by official sources ensures you don’t misapply fluids and helps you address any steering issues correctly.
Summary: The Dodge Ram’s power steering fluid needs depend on whether your truck uses hydraulic or electric power steering. Most hydraulic systems require Mopar ATF+4, while electric power steering models do not require any PS fluid. Always verify the exact specification for your year, trim, and VIN with the owner's manual or a Dodge/Ram dealer to avoid mistakes.