You should change the oil in your vehicle generally every 5,000 to 7,500 miles (8,000 to 12,000 kilometers), depending on your car’s age, type of oil used, and driving conditions. Modern vehicles with synthetic oil can often go up to 10,000 to 15,000 miles between oil changes, but it’s best to follow the manufacturer’s recommendations or use the oil-life monitoring system if your car has one

. Regarding the oil filter, it is typically recommended to replace it every time you change the oil for optimal engine protection. While some sources say you can change the oil filter every second oil change, most mechanics and manufacturers advise changing the oil filter with every oil change because filters get clogged and lose efficiency over time

. Summary:

• Oil change interval: Usually every 5,000 to 7,500 miles; can be longer (up to 15,000 miles) with synthetic oil and newer cars.
• Oil filter replacement: Ideally every oil change, but at least every 10,000 to 15,000 km (6 to 12 months), depending on driving conditions and engine type.
• Factors affecting frequency: Driving style (city vs. highway), engine type (gasoline vs. diesel), oil type (synthetic vs. conventional), and manufacturer’s guidelines.

Checking your oil level monthly and adhering to your vehicle’s owner manual recommendations will help maintain engine health