4.
Check the engine oil condition(contamination, changing color) and quantity.
Because fuel consumption is affected by engine oil(condition and quantity), Engine oil is maintained by the maintenance schedule.
Be sure the vehicle is on level ground.
Turn the engine off after reaching engine normal operating temperature.
Check the oil level.
Check the engine oil condition(contamination, changing color) and quantity.
Are the level and condition of engine oil normal?
YES
Engine oil is OK
NO
Change or Refill the engine oil
