The 2009 Honda Accord uses 5W-20 motor oil (API SN or newer). You can use conventional or synthetic formulations.
Oil type and viscosity
Honda specifies 5W-20 for normal driving in the 2009 Accord. The oil should meet API service standards (SM or newer) and ILSAC GF-4 or GF-5. Synthetic oils offer higher protection and can allow longer drain intervals, but they are optional; either way, choose an oil that meets Honda's specifications and your climate.
Choosing between conventional and synthetic
Conventional oil is typically less expensive and adequate for many drivers, while synthetic oil can provide better high-temperature stability and cold-start performance and may extend service intervals depending on conditions. Check the owner's manual for the exact recommendation for your vehicle and climate.
Engine options and oil capacities
There are two engine options for the 2009 Accord, each with a different oil capacity. The following guidance helps ensure you fill to the correct level when performing an oil change.
- 2.4L 4-cylinder engine: about 4.5 quarts of 5W-20 oil (with filter).
- 3.5L V6 engine: about 5.5 quarts of 5W-20 oil (with filter).
Conclusion: Use the appropriate quantity for your engine and always verify the level with the dipstick after refilling and replacing the filter.
Oil-change intervals and maintenance tips
Intervals vary based on oil type and driving conditions. With conventional oil, many owners follow about a 5,000-mile interval; with synthetic oil, intervals can extend to roughly 7,500 miles or more, subject to the vehicle’s maintenance minder and your driving patterns. Always follow the maintenance minder prompts or the owner’s manual for your vehicle's specific interval and climate.
Summary
Bottom line: For a 2009 Honda Accord, use 5W-20 motor oil that meets API SN or newer and ILSAC GF-4/GF-5; you may choose conventional or synthetic; oil capacity is approximately 4.5 quarts for the 4-cylinder and 5.5 quarts for the V6; always verify exact specs in the owner's manual and adhere to the recommended service intervals.