Isuzu D-MAX 2020 Owner's And Driver's Manual page 698

6-22
SERVICE AND MAINTENANCE
Engine oil deterioration warning
ADVICE
• If you continue to use the oil without changing it even after the engine oil
deterioration warning light comes on, the engine may be damaged.
NOTE
• When particulate matter (PM) has accumulated to a preset level in the diesel
particulate defuser (DPD), the DPD is automatically regenerated through
combustion. To make this regeneration (combustion) possible, a small amount
of fuel is injected into the engine combustion chamber after combustion. A
small amount of the injected fuel gradually mixes with the engine oil, and the
engine oil level rises beyond the original level. This does not indicate an engine
malfunction. If the engine oil level exceeds the "Inspection MAX" mark of the
oil dipstick, change the engine oil even if the regular oil change period on the
Maintenance Schedule has not arrived yet.
• If low speed and low load driving are repeated, the engine oil deterioration
warning light may come on earlier than the Maintenance Schedule. If the engine
oil deterioration warning light comes on, replace the engine oil and the engine
oil filter immediately.
Engine Oil
light
RTUL00SH002501
Engine oil is an important factor in
determining engine performance and
longevity. Be sure to use only specified oil
and oil filter. The engine oil level must be
checked and the oil and oil filter should
be regularly changed at the same time
according to the Maintenance Schedule.
When the engine oil deterioration warning
light comes on, replace the engine oil and
the engine oil filter immediately.
Maintenance Schedule
→ Refer to page 6-142
Recommended Fluids, Lubricants and
Diesel Fuels → Refer to page 6-147