Check the engine oil quality.
Check the oil deterioration, entry of water, discoloring of thinning.
If the quality is visibly poor, replace the oil.
Check the engine oil level.
After warning up the engine and then 5 minutes after the engine stop, oil level should be between the "L" and "F" marks in the dipstick.
If low, check for leakage and add oil up to the "F" mark.
Do not fill with engine oil above the "F" mark.
Recommendation
API SM & ILSAC GF-4 or above / 5W-20
Allowed Oil Grade
API SL, SM or above
ILSAC GF-3, GF4 or above
ACEA A3, A5 or above
Allowed SAE Viscosity
For best performance and maximum protection of all types of operation, select only those lubricants which :
Satisfy the requirement of the API, ILSAC or ACEA classification.
Have proper SAE grade number for expected ambient temperature range.
Lubricants that do not have both an SAE grade number and API, ILSAC or ACEA service classification on the container should not be used.
