โข Perform the inspection on a flat surface.
โข Warm up the engine until the water temperature gauge points to the median.
โข Check the oil level 30 minutes after the engine was stopped. If the oil level is checked about 10 minutes after engine stop, if appears 2 to 5 mm lower than the actual level.
โข If the oil level is beyond the O hole, it is an indication that a portion of fuel injected during diesel particulate filter regeneration was mixed into the engine oil to raise the oil level. In such a case, replace the engine oil.
โข If the oil level is lower than it should be, supply additional oil up to the replenishment limit.
โข If the measured oil level is within normal range but daily check finds oil decrease excessive, check for possible abnormalities below.
โข Piston ring is stuck to piston.
โข Excessive clearance between the piston and the crankcase cylinder
