Toyota 2008 FJ Cruiser Owner's Manual page 298

4-3. Do-it-yourself maintenance
Adding engine oil
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Make sure to check the oil type and prepare the items needed before
adding oil.
Oil grade
Items
Remove the oil filler cap, turning it counterclockwise.
Add engine oil slowly.
Checking the dipstick.
Reinstall the filler cap, turning it clockwise.
The approximate quantity of oil needed to raise the level between low and
full on the dipstick is indicated as follows:
1.6 qt. (1.5 L, 1.3 lmp. qt.)
Recommended viscosity
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Outside temperature
276
If the oil level is below or near
the low level mark, add engine
oil of the same type as already in
the engine.
ILSAC multigrade engine oil
Clean funnel
SAE 5W-30 is the best choice for
good fuel economy, and good
starting in cold weather.
*: If SAE 5W-30 oil is not avail-
able, SAE 10W-30 oil may be
used. However, it should be
replaced with SAE 5W-30 at
the next oil change.