Oil approval first
Choose oil by the required Mercedes-Benz approval and engine specification, not simply by a thicker viscosity for Dubai weather. Ask for the product and quantity on the invoice. Routine engine flushing is not automatically necessary at every oil change.
Time matters too
Use the ASSYST reminder, service booklet, and maintenance history together. Low annual mileage does not cancel time-based requirements. Frequent short journeys, long idling, and dusty use can justify discussing the appropriate inspection schedule.
Keep a fluid record
Record oil and coolant top-ups with the date and mileage. A changing consumption pattern is more useful than a vague report that the level is sometimes low. Repeated loss needs investigation rather than a permanent top-up routine.
Prioritize the invoice
Separate safety-related faults, due maintenance, and items that can be monitored. Request the reason and expected consequence for each recommendation. That makes it easier to budget without postponing a braking or overheating concern alongside a minor comfort issue.