What transmission fluid goes in a 1998 Dodge Ram 1500?
In short, the typical 1998 Dodge Ram 1500 with an automatic transmission uses Dexron III/Mercon automatic transmission fluid. This guide explains how to identify your model and what fluids are appropriate for both automatic and manual transmissions on that year.
Identify your transmission type
To choose the right fluid, confirm which exact transmission is in your truck. The 1998 Ram 1500 offered several transmissions, including automatic 46RE/46RH and, in some builds, a manual option. Use these steps to identify it:
- Inspect the transmission case for a model stamp such as 46RE, 46RH, 47RE, or NV4500 (if manual).
- Check the build sheet, window sticker, or owner's manual for the transmission code.
- Look at the automatic transmission control (electronic vs hydraulic) and the presence of a shift program; electronic controls usually indicate 46RE/46RH/47RE.
Once you know your transmission type, you can select the correct fluid and maintenance steps.
Fluid recommendations for the 1998 Dodge Ram 1500
Most 1998 Ram 1500 automatics require Dexron III/Mercon ATF. This is the conventional automatic transmission fluid you will find on shelves. The following options are commonly cited as compatible, but always confirm with the manual or dealer.
- Dexron III/Mercon automatic transmission fluid (the standard choice for 46RE/46RH/47RE transmissions).
- Dexron II or Dexron II-D (older specification that may still be acceptable in some units; verify with the service manual).
- ATF+4 (rarely required for 1998 Rams; primarily used in some later Chrysler transmissions; do not assume this is correct unless the manual specifies it).
Bottom line: For the automatic transmissions in a 1998 Ram 1500, Dexron III/Mercon ATF is the recommended fluid; always verify with the owner’s manual or a dealer. If in doubt, use the Dexron III/Mercon-spec fluid explicitly recommended by Mopar for the 46RE/46RH/47RE transmissions.
Note: Many modern ATFs with Dexron III/Mercon labeling are backward compatible with older Dexron II/III specifications, but always verify with the vehicle’s manual or a dealer before mixing fluids. If you’re unsure, consult a dealer or qualified mechanic to confirm the exact spec for your VIN.
Manual transmission considerations
For those Ram 1500s that were equipped with a manual transmission in 1998, the fluid is typically a GL-4 gear oil such as 75W-90 or 80W-90. Do not use GL-5 oils in these older manual transmissions, as they can corrode brass components inside. Check the owner’s manual or a parts specialist for the exact grade and capacity.
Professional note: If you’re replacing the transmission fluid, consider performing a complete fluid change and inspecting or replacing the pan gasket and any filter if applicable.
How to decide and maintain
- Confirm the transmission model (46RE, 46RH, 47RE, or manual) using the stamping on the case or service documentation.
- Reference the owner’s manual or a dealer for the exact spec required.
- Use the recommended ATF for automatics (Dexron III/Mercon) or the specified manual transmission oil as indicated.
- Replace the transmission fluid and filter (if applicable) at the recommended intervals and check for leaks or shifting issues.
Following these steps helps ensure smooth shifting and long transmission life.
Summary
The 1998 Dodge Ram 1500 typically uses Dexron III/Mercon automatic transmission fluid in its automatic transmissions (46RE/46RH/47RE). If your truck has a rare manual transmission from that year, use GL-4 gear oil such as 75W-90 or 80W-90. Always verify the exact specification for your VIN or consult your dealer or service manual to avoid incorrect fluid choices. Proper identification and adherence to the manual will prevent damage and ensure optimal performance.
What type of transmission fluid does a Ram 1500 take?
ATF+4
FRAM – ATF+4 Automatic Transmission Fluid: 1 Quart (Part No. F440)
What type of transmission fluid does a 1998 Dodge Ram 1500 take?
The correct transmission fluid for a 1998 Dodge Ram 1500 is ATF+4, which is the specific fluid recommended by the manufacturer. You can find this fluid at auto parts stores from brands like Valvoline and others, and it is compatible with earlier specifications like ATF+3 and ATF+2.
Details about ATF+4
- Approved specification: Look for fluid that is licensed for Chrysler specification MS-9602.
- Compatibility: ATF+4 is designed to be a backward-compatible replacement for ATF+3 and ATF+2, making it the standard for your truck.
- Alternative fluids: Some multi-vehicle automatic transmission fluids may work, but ATF+4 is the specific and recommended choice.
- Check your owner's manual: It is always best to consult your owner's manual for the most accurate information on the correct fluid type and capacity for your vehicle, as there could be variations.
How much transmission fluid does a 1998 Dodge 1500 hold?
For Automatic Transmission: 46RE....AP4
4 speed 46RE Total Fill 10.1 quarts. Capacity: 4 quarts Initial Fill.
What type of transmission fluid for 1997 Dodge Ram 1500?
The correct transmission fluid for a 1997 Dodge Ram 1500 is ATF+4, which is officially licensed and approved by Chrysler/Dodge. You should use a fluid that is specifically labeled as ATF+4 to ensure proper performance and longevity, as Dexron fluids are not recommended and can cause issues.
- For automatic transmissions: Use a fluid that meets the Chrysler MS-9602 or is licensed for ATF+4.
- For manual transmissions: Refer to your owner's manual, but the appropriate fluid is likely a 75W-90 gear lube.
