Typically, vehicles with higher mileage engines perform best with specialty, high-mileage motor oils. One of the best options you could find in today's market is the Castrol Edge High Mileage. It's designed for vehicles that have at least 75,000 miles on the odometer. Use it right, and Castrol claims that it could last upwards of 10,000 miles. It uses some of Castrol's most advanced formulations yet. There are several unique elements with the Castrol Edge High Mileage Oil. For example, it's able to reduce the amount of phosphorus being emitted, thus ensuring that it's not going to excessively wear out your catalytic converter and emissions systems. Furthermore, it offers fantastic protection against wear and tear and still works great, even at higher temperatures.