Final answer:
The maximum duration without engine oil servicing is generally recommended to be between 3,000 to 5,000 miles or 3 to 6 months, which translates to approximately 100 to 200 operation hours for most vehicles.
Step-by-step explanation:
The maximum duration without engine oil servicing depends on several factors including the type of engine and operating conditions. However, it is generally recommended to change the engine oil every 3,000 to 5,000 miles or every 3 to 6 months, whichever comes first. This translates to approximately 100 to 200 operation hours for most vehicles.