1999 Lexus SC 400 Owners Manual - Page 364
1999 Lexus SC 400 Manual
Page 364 highlights
ENGINE Engine oil selection Use API SJ, "Energy-Conserving" multigrade engine oil or ILSAC multigrade engine oil. Recommended viscosity (SAE): 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. 346
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ENGINE
346
Engine oil selection
Use API SJ, ”Energy–Conserving” multigrade engine oil or
ILSAC multigrade engine oil.
Recommended viscosity (SAE):
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.