What kind of oil does a 2008 Lexus gs450h take?
The 2008 Lexus GS450h requires a full-synthetic 5W-20 motor oil.
This article explains why this grade is recommended, how much oil you’ll need, and how to choose the right oil and filter for the GS450h’s 3.5-liter hybrid V6 powertrain. We also offer practical tips for maintenance and verification with official sources.
Oil type and viscosity
The GS450h uses a 5W-20 synthetic motor oil to help balance cold-start protection, fuel efficiency, and engine longevity in a hybrid setup. Using the recommended viscosity supports smooth startup in chilly weather and consistent lubrication as the engine temperature fluctuates during driving.
Why 5W-20 matters
5W-20 is a lighter-viscosity oil that flows quickly at startup and reduces internal drag, which is beneficial for a hybrid system designed for efficiency. Unless a Toyota/Lexus technician approves a different viscosity for your climate or VIN, sticking with 5W-20 synthetic is the standard guidance for this engine.
To confirm the exact specification for your vehicle, consult the owner’s manual or contact a Lexus dealer to verify VIN-specific requirements.
Before proceeding with any changes, review the essential guidelines so you have a clear checklist to follow during an oil service.
- Viscosity: 5W-20 synthetic motor oil.
- Oil type: full synthetic that meets or exceeds Lexus/Toyota specifications for the 3.5L Hybrid engine.
- Oil capacity: approximately 6.0–6.5 quarts (with filter) for a typical 3.5L V6 engine.
- Oil filter: use a quality oil filter rated for synthetic oil and replace with every oil change.
Following these guidelines helps ensure proper lubrication, engine protection, and optimal performance for the GS450h.
Practical tips for changing oil
Always verify the correct grade for your vehicle by checking the owner’s manual or speaking with a Lexus dealership, especially if your car’s production date or climate zone has special recommendations. In colder climates, 5W-20 is commonly advised, while in extreme heat you should rely on the official guidance for your specific VIN. Use a high-quality synthetic oil and a compatible filter, and reset the vehicle’s oil life monitor if equipped. For hybrid systems, consider professional service if you’re not confident performing the oil change yourself.
Summary
The 2008 Lexus GS450h takes a full-synthetic 5W-20 motor oil, with an approximate capacity of 6.0–6.5 quarts including a filter. Always confirm the exact specification in your owner’s manual or with a Lexus dealer to ensure VIN- and climate-specific accuracy.
