What kind of oil does a 2018 Lexus GS 350 take?
The 2018 Lexus GS 350 requires 0W-20 full-synthetic motor oil, and the engine holds about 6 quarts (roughly 5.7 liters) with a filter.
Oil type and grade
The GS 350 is designed to run on 0W-20 synthetic oil to maximize fuel efficiency and engine protection. Below are the key points you should know about the grade and viscosity.
- 0W-20 full-synthetic motor oil
- Designed for the 3.5L V6 engine (2GR-FSE) in the GS 350
- Approximate capacity: about 6 quarts (5.7 L) with a new filter
- Use the oil that meets the vehicle’s specifications; consult your owner's manual or a Lexus dealer for region-specific guidance
Using the recommended 0W-20 full-synthetic oil helps ensure optimal lubrication, fuel economy, and engine longevity. Always verify the current specification in your owner's manual or with an authorized Lexus service center, as regional guidelines can vary.
Oil capacity and service
Planning your oil change around the correct capacity and procedure helps ensure a proper swap and accurate fill levels.
- Capacity: approximately 6 quarts (about 5.7 liters) with filter
- Oil type: 0W-20 synthetic as specified for the engine
- New oil filter: replace at every oil change
- Filling and checking: add oil gradually and recheck the level to stay within the proper range
Adhering to the correct capacity and using the proper filter and grade ensures effective lubrication and simplifies maintenance over the life of the vehicle.
Maintenance intervals
Oil-change intervals vary by driving conditions. The following guidelines reflect typical Lexus recommendations for the GS 350 with synthetic oil.
- Normal driving conditions: every 10,000 miles (16,000 km) or 12 months, whichever comes first
- Severe driving conditions: every 5,000 miles (8,000 km) or 6 months, whichever comes first
- Always consult the owner's manual and your dealer for your exact schedule based on climate and usage
Sticking to the recommended intervals helps prevent sludge buildup, maintains protection, and supports engine performance.
Synthetic vs. conventional oil
For the GS 350, Lexus recommends synthetic 0W-20 oil. Conventional oil is not advised for this engine, as synthetic oil provides better protection, temperature stability, and long-term performance.
Checking oil level and topping up
To check the oil level, park on level ground and use the dipstick after the engine has cooled or been off for a few minutes. Ensure the oil level sits between the marks shown on the dipstick; if low, add small amounts of the correct 0W-20 oil, rechecking after each addition to avoid overfilling.
Summary
In brief, the 2018 Lexus GS 350 takes 0W-20 full-synthetic motor oil, with an approximate capacity of 6 quarts (5.7 liters) including the filter. Follow Lexus’s maintenance guidelines for oil changes and interval schedules to keep the engine running smoothly.
