Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Honda RidgelineOil Type & Capacity
OEM spec from the factory service manual for the RT variant.
Quick Answer
Oil Type
API - SAE 5W-20 Detergent Oil
Capacity (w/ Filter)
4.50 QTS.
4.25 L
Variant
RT
Note: Excluding the oil remaining in the engine.
You may use a synthetic motor oil if it displays the API Certification Seal, and it is the proper weight.
Source: Factory service manual — 2008 Honda Ridgeline RT. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 2008 Honda Ridgeline take?
- The 2008 Honda Ridgeline requires API - SAE 5W-20 Detergent Oil. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the RT configuration.
- How much oil does a 2008 Honda Ridgeline need?
- The 2008 Honda Ridgeline takes 4.50 QTS. (4.25 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2008 Honda Ridgeline?
- Yes — synthetic oil that meets the API - SAE 5W-20 Detergent Oil specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2008 Honda Ridgeline?
- Using oil that does not meet the API - SAE 5W-20 Detergent Oil specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.