The 2008 Honda Ridgeline uses Honda ATF DW-1 automatic transmission fluid.
DW-1 is Honda’s specification for automatic transmissions in this era. It is not interchangeable with older Dexron/Mercon fluids, and using a fluid that does not meet the DW-1 spec can affect shifting and potentially shorten transmission life. Always verify the exact requirement in the owner’s manual or with a Honda dealer before purchasing fluid.
Fluid specification and compatibility
Key facts about the fluid and compatibility:
- Required specification: Honda ATF DW-1 for the Ridgeline’s 5-speed automatic transmission.
- Approved sources: Genuine Honda ATF DW-1 or third-party fluids that explicitly meet the DW-1 specification.
- What to avoid: Do not substitute with Dexron III, Mercon, or other non-DW-1 fluids, as this can cause improper shifting and potential wear.
- Availability: DW-1 is commonly sold at Honda dealerships, auto parts stores, and some quick-lube shops; verify labeling to ensure it meets DW-1.
In short, use DW-1 to maintain proper shifting behavior and transmission health, and confirm the specification if you’re unsure about a product’s rating.
Maintenance and checks
Guidance for keeping the transmission fluid in good condition, including when to service and how to check levels:
- Ensure the engine and transmission are at operating temperature before checking or draining fluid.
- Park on level ground, apply the parking brake, and follow the vehicle’s manual for checking the transmission fluid level and dipstick location (some models rely on a transmission service procedure rather than a visible dipstick).
- When topping off or replacing fluid, use Honda ATF DW-1 and avoid other fluids unless the service guide explicitly allows it.
- Inspect for leaks and monitor fluid color and smell; replace if the fluid appears dark, burned, or contaminated.
- Follow the recommended service intervals from Honda. In normal driving, a transmission fluid change is typically spaced farther apart (often around 60,000 miles by many manufacturers’ guidelines); in severe conditions (towing, frequent heavy-duty use, hot climates), more frequent service may be advised.
Always consult the owner’s manual or a qualified technician for the precise procedure and intervals for your vehicle’s configuration and regional guidelines.
Summary
The 2008 Ridgeline requires Honda ATF DW-1 automatic transmission fluid. Use DW-1 or an equivalent fluid that explicitly meets the DW-1 specification, and avoid Dexron/Mercon substitutes. Check your manual for dipping procedures and service intervals, and rely on a qualified technician if you’re unsure about the proper maintenance steps.