Use 5W-20 motor oil that meets API SN or newer and ILSAC GF-5 as the baseline for a 2008 Honda Odyssey. You can choose conventional, synthetic blend, or full synthetic, but keep the viscosity at 5W-20 for normal driving conditions. In very hot climates or under severe service, 5W-30 may be acceptable if your owner’s manual or dealer confirms it for your VIN.
The 2008 Odyssey uses a 3.5-liter V6 engine. Following the approved oil specification helps protect the engine and maintains warranty compatibility. Always check the oil filler cap for the suggested viscosity and refer to the owner’s manual or your local Honda service department if you’re unsure about substitutions. Oil quality, not just viscosity, also matters, so choose a reputable brand or Honda-certified oil that meets the listed standards.
Oil type and specifications
Here are the key options and requirements to guide your selection.
- Viscosity: 5W-20 is the standard baseline for normal driving in the 2008 Odyssey.
- Oil types: Conventional, synthetic blend, or full synthetic oils are acceptable, as long as they meet API SN (or newer) and ILSAC GF-5 specifications.
- Oil brand and quality: Choose a reputable brand or Honda Genuine Motor Oil that meets the API/ILSAC specs relevant to your vehicle.
- Oil capacity and filter: The 3.5L V6 typically uses about 5.5 quarts of oil with a filter; replace the filter at each change and fill to the correct level using a dipstick check.
- Alternatives: If hot climates or heavy towing are a concern, 5W-30 may be permissible in some manuals or dealer guidance, but verify with your manual or dealer before using it.
Concluding the oil-specification guidance, always confirm the exact viscosity and certification on your vehicle’s oil fill cap or in the owner’s manual, and use the oil that matches those specifications for best results.
Change intervals and maintenance
Oil-change frequency depends on oil type and driving conditions; the Odyssey can use maintenance reminders to guide service intervals, and your dealer can tailor recommendations to your VIN. The following guidelines provide a general framework.
- Conventional oil: Commonly changed every 3,000–5,000 miles (or every 3–6 months), depending on driving conditions and climate.
- Synthetic oil: Often extended to about 7,500–10,000 miles (or up to 12 months), depending on the oil used and driving conditions.
- Maintenance Minder: If your Odyssey is equipped with Honda’s Maintenance Minder, rely on that system to determine the optimal oil-change interval based on actual driving habits.
Concluding the maintenance guidance, always follow the maintenance minder or the owner’s manual for intervals, and inspect the oil level regularly between changes to catch any leaks or consumption issues early.
Summary
For a 2008 Honda Odyssey, the recommended oil is 5W-20 that meets API SN (or newer) and ILSAC GF-5 standards. You can use conventional, synthetic blend, or full synthetic oil, with 5W-20 as the baseline viscosity. If you drive in extreme heat or under severe conditions, consult your manual or dealer about whether 5W-30 is appropriate. Follow maintenance minder guidance or the manual for oil-change intervals, typically shorter for conventional oil and longer for synthetic, and always use a quality oil and filter to protect the engine. Regularly check the oil level and consult a Honda service professional if you’re unsure about specifications for your vehicle’s VIN.


