The 2004 Honda Odyssey takes Honda Automatic Transmission Fluid DW-1 (Honda ATF DW-1) for its automatic transmission.
In practice, this means you should use DW-1 or an equivalent fluid that meets Honda's DW-1 specification. This applies to most 2004 Odysseys equipped with the four-speed automatic, though always check your owner's manual for model-specific guidance or if your van has had a transmission replacement.
Recommended transmission fluid
The following notes summarize the official guidance on what to use in a 2004 Odyssey’s automatic transmission.
- Use Honda ATF DW-1 (Honda Genuine ATF DW-1) for the automatic transmission.
- Do not use Dexron/Mercon or other ATF types not specified to meet DW-1 standards, as this can cause shifting issues or transmission damage.
- When replacing fluid, use a fluid that meets DW-1 specification, and consult a Honda dealer or qualified technician if DW-1 is not readily available.
In summary, for a 2004 Honda Odyssey, prioritize Honda ATF DW-1 and avoid non-DW-1 ATFs to maintain proper transmission performance and longevity.
Summary
The 2004 Honda Odyssey requires Honda Automatic Transmission Fluid DW-1 (Honda ATF DW-1). Use DW-1 or an approved equivalent, avoid Dexron/Mercon or other non-DW-1 fluids, and consult the owner's manual or a dealer for confirmation if your vehicle has been modified.