Lexus ES300 Owner's Manual page 327

If the oil level is below or only slightly above the low mark,
add engine oil of the same type as already in the engine.
Remove the oil filler cap and add engine oil a little at a time,
checking the dipstick. We recommend that you use a funnel
when adding oil. The approximate quantity of oil needed to fill
between the low level mark and the full level mark on the
dipstick is indicated below for reference.
When the level reaches within the correct range, return the
filler cap and turn the cap clockwise until you hear a click.
Oil quantity, L (qt., lmp. qt.)
D Be careful not to spill the engine oil on the vehicle
components.
D Avoid overfilling, or the engine could be damaged.
Check the oil level on the dipstick once again after
adding the oil.
1.5 (1.6, 1.3)
ENGINE
NOTICE
313