Engine oil

 1. **Oil Type**: The type of oil used can affect oil change intervals.  Conventional oil changes are usually faster than synthetic oil changes.

  2. **VEHICLE MAKE AND MODEL**: The complexity of your vehicle's engine and access to the oil filter and drain plug can affect timing.  Some vehicles have more accessible components, making the process faster.

  3. **TECHNICIAN EXPERIENCE**: A skilled and experienced technician will perform oil changes more efficiently, possibly reducing the time required.

  4. **Service Center**: The efficiency of the service center you visit can also affect the time it takes.  Some places are known for their quick service, while others can have long wait times.

  5. **Additional Services**: If you request additional services or inspections, such as a tire rotation or filter change, this will increase the required time.

  6. **Waiting Times**: The time you spend waiting for your turn and during the oil change process depends on how busy the service center is.

  Finally, while a typical oil change can be completed in about 30 to 45 minutes, these factors are important to consider when planning your visit to the service center.  If you want a quick oil change, using conventional oil and scheduling during off-peak hours can help speed up the process.