Lexus SC 430 2002 Manual page 316

ENGINE
Engine oil selection
"Toyota Genuine Motor Oil" is filled in your Lexus vehicle. Use
Lexus approved "Toyota Genuine Motor Oil" or equivalent to
satisfy the following grade and viscosity.
Oil grade: API grade SJ "Energy−Conserving", SL
"Energy−Conserving" or ILSAC multigrade engine oil.
Recommended viscosity (SAE):
62sa01
SAE 5W−30 is the best choice for your vehicle, for good
fuel economy, and good starting in cold weather.
If you use SAE 10W−30 engine oil in extremely low
temperatures, the engine may become difficult to start, so
SAE 5W−30 engine oil is recommended.
298
Oil identification marks
62L038
"API Service Symbol "ILSAC Certification Mark
Either or both API registered marks are added to some oil
containers to help you select the oil you should use.
D The API Service Symbol is located anywhere on the outside
of the container.
The top portion of the label shows the oil quality by API
(American Petroleum Institute) designation such as SL.
The center portion of the label shows the SAE viscosity
grade such as SAE 5W−30. "Energy−Conserving", shown
in the lower portion, indicates that the oil has fuel−saving
capabilities.
D The ILSAC (International Lubricant Standardization and
Approval Committee) Certification Mark is displayed on the
front of the container.