Lexus IS F 2012 Owner's Manual page 400

4-3. Do-it-yourself maintenance
■
Adding engine oil
Make sure to check the oil type and prepare the items needed before
adding oil.
Engine oil
selection
Oil quantity
(Low  Full)
Items
Remove the oil filler cap by turning it counterclockwise.
STEP 1
Add engine oil slowly, checking the dipstick.
STEP 2
Install the oil filler cap by turning it clockwise.
STEP 3
400
P. 516
1.6 qt. (1.5 L, 1.3 Imp. qt.)
Clean funnel
If the oil level is below or near the
low level mark, add engine oil of
the same type as already in the
engine.