2009 Lexus ISOil Type & Capacity

OEM spec from the factory service manual for the AWD variant.

Quick Answer

Oil Type

TOYOTA Genuine Motor Oil. API - SAE 5W-30

Capacity (w/ Filter)

6.80 QTS.

6.43 L

Variant

AWD

Note: SAE 5W-30 is the best choice for good fuel economy and good starting in cold weather. If SAE 5W-30 is not available, SAE 10W-30 oil may be used. However, it should be replaced with SAE 5W-30 at the next oil change.
Source: Factory service manual β€” 2009 Lexus IS AWD. View full manual section β†’

Frequently Asked Questions

What type of oil does a 2009 Lexus IS take?
The 2009 Lexus IS requires TOYOTA Genuine Motor Oil. API - SAE 5W-30. The exact spec may vary slightly by engine variant β€” this page shows the OEM recommendation for the AWD configuration.
How much oil does a 2009 Lexus IS need?
The 2009 Lexus IS takes 6.80 QTS. (6.43 L) of engine oil with the filter replaced.
Can I use synthetic oil in my 2009 Lexus IS?
Yes β€” synthetic oil that meets the TOYOTA Genuine Motor Oil. API - SAE 5W-30 specification is acceptable and often preferred for better protection and longer change intervals.
What happens if I use the wrong oil in my 2009 Lexus IS?
Using oil that does not meet the TOYOTA Genuine Motor Oil. API - SAE 5W-30 specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.