About 9.5 quarts for a full transmission-fluid change. A pan-drain-and-fill typically replaces roughly 4–5 quarts. Exact amounts can vary depending on drivetrain (FWD vs. AWD) and whether the transmission filter is replaced during service.
The 2017 Ridgeline uses a 6-speed automatic transmission. Knowing the correct fluid capacity helps with planning maintenance, whether you're performing a routine top-off, a complete drain-and-fill, or a full flush. The official capacity is closest to 9.5 quarts when changing the fluid in a typical service, but actual amounts you replace can differ based on the chosen service method and drivetrain configuration.
Capacity by service method
Different maintenance approaches affect how much fluid you actually replace. The following are typical quantities for the Ridgeline's 6‑speed automatic:
- Pan drain and fill (no filter change): typically 4–5 quarts.
- Complete drain and refill or transmission flush/replacement: about 9–10 quarts to refill to the full capacity.
- Full system capacity when starting from empty or after a full replacement: roughly 9.5 quarts.
Note: The exact amount can vary by model year, drivetrain (FWD vs AWD), and whether the transmission filter is replaced during service.
Fluid specification and service tips
Fluid type
Use Honda DW-1 automatic transmission fluid (ATF) or an equivalent that meets Honda specifications. Avoid mixing different ATFs, and follow the service manual guidance for fill level and procedures.
Summary
The 2017 Honda Ridgeline’s 6-speed automatic transmission holds about 9.5 quarts of ATF, with the amount you replace depending on whether you do a pan drain and fill, a full drain/refill, or a complete flush. Plan for roughly 4–5 quarts for a simple drain-and-fill, and about 9–10 quarts for a full replacement, while confirming details in your owner’s manual or with a Honda service bulletin. Always use the recommended DW-1 ATF and adhere to the proper fill procedure for accurate results.