The Ridgeline’s 3.5-liter V6 requires SAE 5W-20 engine oil with API certification. For best results, use Honda Genuine Motor Oil 5W-20 or an equivalent that meets Honda’s specifications.
This article explains the official specification for the 2008 Ridgeline, how to confirm you’re using the correct oil, and practical tips for selecting and maintaining the right grade and quality over time.
Oil specification for the 2008 Ridgeline
The 2008 Ridgeline calls for SAE 5W-20 engine oil. Oils should be API-certified, and Honda recommends using Honda Genuine Motor Oil 5W-20 or an equivalent that meets Honda’s service spec. Both conventional and synthetic 5W-20 oils are acceptable, depending on your maintenance preferences and operating conditions.
How to verify you’re using the correct oil
Consult the owner's manual for the exact specification and check the oil fill cap under the hood, which typically indicates the grade (5W-20). When shopping, choose oils that list API SN (or newer) and, if possible, ILSAC GF-5 (or higher) and confirm compatibility with Honda engines.
Practical considerations
Sticking with 5W-20 supports fuel economy and reliable cold-start performance. In extreme or severe driving conditions, follow Honda’s guidance and avoid substituting incompatible grades without professional advice.
Summary
For a 2008 Honda Ridgeline, the recommended engine oil is SAE 5W-20, API-certified, with Honda Genuine Motor Oil as the ideal option. Both conventional and synthetic 5W-20 oils are acceptable; always verify the grade and certification via the owner’s manual or the under-hood label.
Can I use 5W30 instead of 5W20 in my Honda?
Can You Switch Between 5W30 and 5W20? Only switch if your owner's manual approves. Using the wrong oil can affect engine performance and longevity. Moving from 5W20 to 5W30 adds protection but might reduce efficiency.
How to make a ridgeline faster?
Additional ways to make your Ridgeline faster and more capable include:
- Upgrading the exhaust system: Installing a performance exhaust can reduce back pressure and improve engine breathing.
- Cold air intake kits: These allow cooler, denser air into the engine, enhancing combustion efficiency.
What type of oil does a 2008 Honda Ridgeline use?
Oil Grade: API*
| Viscosity: | 5W-20 (All TEMPS) |
|---|---|
| Capacity: | 4.5 quarts (with filter). After refill check oil level. |
| Capacity: | 4.2 quarts. w/of. After refill check oil level. |
| Torque: | 29 ft/lbs (Oil Drain Plug) |
What is the best oil to use in a Honda Ridgeline?
Honda Ridgeline Oil Type: OE 0W-20 Synthetic Motor Oil.