Lexus IS F 2012 Owner's Manual page 516

6-1. Specifications
Lubrication system
Oil capacity
(Drain and refill
*
 reference
)
without filter
with filter
*
: The engine oil capacity is a reference quantity to be used when exchanging.
Warm up and turn off the engine, wait more than 5 minutes, and check the oil
level on the dipstick.
■ Engine oil selection
"Toyota Genuine Motor Oil" is used in your Lexus vehicle. Use Lexus
approved "Toyota Genuine Motor Oil" or equivalent to satisfy the follow-
ing grade and viscosity.
Oil grade: ILSAC multigrade engine oil
Recommended viscosity: SAE 5W-30
Outside temperature
516
8.7 qt. (8.2 L, 7.2 Imp. qt.)
9.8 qt. (9.3 L, 8.2 Imp. qt.)
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.