What kind of oil does a 2009 Lexus 350 take?

The 2009 Lexus 350 generally requires SAE 5W-30 engine oil, with an oil capacity around 5.4 quarts (5.1 liters) including a filter. Synthetic oil is preferred, but conventional 5W-30 is acceptable if it meets the vehicle’s specifications. Always check the owner's manual for your exact trim (ES350 or RX350) and your climate before topping up or changing the oil.

Oil grade and specifications

Below are the standard recommendations for the oil grade and performance specifications that align with the factory requirements for the 3.5-liter V6 used in the 2009 Lexus 350 family.

• Viscosity: SAE 5W-30


• Certifications: API SN or ILSAC GF-5


• Oil type: Synthetic or conventional acceptable; synthetic is preferred for longer intervals and better protection


• Manufacturer-style oils: Lexus/Toyota-approved or equivalent high-quality motor oil

Using 5W-30 ensures reliable lubrication across typical operating temperatures, while meeting current API/ILSAC standards helps protect the engine and maintain warranties where applicable.

Oil capacity and fill levels

The following details cover how much oil your engine holds and how to verify the correct level after a change.

• Approximate capacity: about 5.4 quarts (with filter). Some variants or drain methods may require up to around 6.0 quarts.


• Fill guidance: start with 5.0–5.2 quarts, run the engine briefly, then recheck and add until the dipstick shows the correct level


• Dipstick check: park on level ground, wait for the oil to settle, and ensure the level sits between the min and max marks

Because exact capacity can vary by model (ES350 vs RX350) and oil filter size, always confirm the capacity listed in your owner’s manual and double-check the level with the dipstick after a change.

Maintenance intervals and practical tips

While the core question is about the oil type, it helps to note typical maintenance practices for a 2009 Lexus 350 to keep the engine protected.

• Oil change interval: commonly about every 5,000 miles with conventional oil; synthetic oil can extend to roughly 7,500–10,000 miles depending on driving conditions and manufacturer recommendations


• Filter: replace the oil filter with every oil change to ensure proper filtration


• Quality matters: use a high-quality filter and oil that meets or exceeds API SN / ILSAC GF-5 specs


• Climate considerations: in extreme temperatures, verify the recommended viscosity with your manual; some climates may favor synthetic oil for better temperature performance

Following these guidelines helps maintain engine protection, fuel efficiency, and long-term reliability for the 2009 Lexus 350 family.

Summary

The 2009 Lexus 350 typically uses SAE 5W-30 engine oil, with an oil capacity around 5.4 quarts (plus a filter). Synthetic oil is preferred, but conventional 5W-30 is acceptable if it meets required specifications. Always consult the owner's manual for your exact model (ES350 or RX350) and climate to confirm the precise capacity and recommended oil changes. Regular use of a quality oil and filter, and adhering to the suggested change intervals, help maintain optimal engine performance.

What oil does a 2009 Lexus IS350 take?

5w30
2009 Lexus IS350 3.5 L V6. - 7 Qts Genuine Lexus Engine Oil 5w30.

Which engine oil Is best for a Lexus RX350?

synthetic SAE 0W-20 motor oil
For most Lexus RX models, Lexus recommends synthetic SAE 0W-20 motor oil.

What oil does a 2009 Lexus RX350 take?

5W-30
Oil Grade: API*

What oil does my 2009 Lexus ES350 take?

For most Lexus ES models, SAE 0W-20 full synthetic motor oil is recommended.