McCullough NAPA Auto Care

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Serving Metro Atlanta Since 1969

what is high mileage oil and do you need it?

Table of Contents

What Is High Mileage Oil?

High mileage oil is a specially designed motor oil that caters to the needs of vehicles with higher mileage, typically over 75,000 miles. It contains unique additives and higher viscosity that provide extra protection to worn engine parts, offering benefits like reducing oil consumption, increasing performance, and preventing leaks. High mileage oil is suitable for both gasoline and diesel engines.

Considering high mileage oil is advisable if your vehicle has accumulated over 75,000 miles or shows signs of aging. Common indicators of engine aging include oil leaks, oil consumption, and decreased performance. Switching to high-mileage oil may be beneficial if your vehicle exhibits these signs. 

High Mileage Oil Is Important For Cars With Many Miles

Extending Engine Life

For vehicles with significant mileage, high-mileage oil plays a critical role in extending the engine’s lifespan by offering protection against wear and reducing friction. This type of oil is essential for maintaining the performance of older engines.

Reducing Wear and Tear In the Engine

High mileage oil contains detergents and dispersants that help keep the engine clean by reducing sludge and deposit formation. This results in smoother engine operation and less wear on its components.

Comparing Regular and High Mileage Oil

The following information will help you understand the different types of engine oil


While both types of oil aim to lubricate and protect the engine, high-mileage oil offers enhanced protection for older engines. It addresses issues like leaks and wear, which are common in high-mileage vehicles.


High mileage oil might be slightly more expensive than regular motor oil due to its specialized additives. However, the investment is worthwhile for prolonging the life of an older engine.

Schedule Your Oil Change Today!

Not sure what type of oil you need for your car? McCullough NAPA Auto Care can assist! Schedule your oil change with us, and our ASE-certified technicians can suggest what type of oil should be used with your car.

FAQ About High Mileage Oil

High mileage oil is designed for vehicles with over 75,000 miles, not necessarily old. It’s suitable for any car that has accrued significant mileage.

It is not recommended to switch back as doing so may result in the loss of benefits provided by high mileage oil.

Follow the manufacturer’s recommendations or the intervals suggested in your vehicle’s owner’s manual.

Given its benefits for high-mileage vehicles, many users find the additional cost to be a valuable investment in prolonging engine life.

While it won’t harm, it is unnecessary. High mileage oil’s benefits are best realized in vehicles with over 75,000 miles.