No, high mileage oil does not damage seals when used as directed. It is specifically formulated with seal conditioners that help soften and rejuvenate aging seals, reducing leaks and oil consumption in older engines. While
How Often To Change Oil With High Mileage Oil? High mileage oil should typically be changed every 5,000 to 7,500 miles, depending on your vehicle, driving habits, and oil type. These oils are formulated with
5W-30 and 5W-30 High Mileage oils have the same viscosity, but high mileage oil is specially formulated for engines with over 75,000 miles. It contains additives that help condition seals, reduce leaks, and minimize oil
“Should I use thicker oil in a high mileage engine” refers to whether increasing oil viscosity can help manage wear in engines with higher mileage. Thicker oil may reduce oil consumption, improve oil pressure, and
Overview: High mileage engine oil is a specialized motor oil formulated for vehicles with typically over 75,000–100,000 miles (120,000–160,000 km) on the odometer. It contains added conditioners and seal-swelling agents that help reduce leaks, minimize
