Toyota 2009 Yaris Hatchback Owner's Manual page 261

4-3. Do-it-yourself maintenance
NOTICE
n To prevent serious engine damage
Check the oil level on regular basis.
When replacing the engine oil
n
Be careful not to spill engine oil on the vehicle components.
l
Avoid overfilling, as the engine could be damaged.
l
l Check the oil level on the dipstick every time you refill the vehicle.
Be sure the engine oil filler cap is properly tightened.
l
Engine coolant
The coolant level is satisfactory if it is between the FULL and LOW
lines on the reservoir when the engine is cold.
250
Reservoir cap
FULL
LOW
If the level is on or below the
LOW line, add coolant up to the
FULL line.