The frequency of oil changes can vary based on several factors, including the type of oil used, driving conditions, and manufacturer recommendations. Generally, it’s advisable to change synthetic oil every 7,500 to 10,000 miles, while conventional oil may require changes every 3,000 to 5,000 miles. It's essential to consult your vehicle's owner manual for specific recommendations. This is a source of some controversy, but adhering to the advised oil change schedule at a minimum is the minimum you can do, but if you’re driving your German performance vehicle aggressively on a regular basis, such as a BMW M4 or Porsche 911 GT3, it is imperative that you change your oil and other fluids more regularly as heat cycles will degrade the oil effectiveness more rapidly.