High Mileage Oil

7 Benefits of A High Mileage Oil

Daniel McDonald
Daniel McDonald6 min read
7 Benefits of A High Mileage Oil

7 Benefits of A High Mileage Oil

High mileage motor oils are designed to be used in vehicles with higher mileage, specifically those that have between 75,000 miles-100,000 miles or more on the odometer. 

While regular motor oil can still be used in these vehicles, these oils are designed to help engines burn less fuel, increase their horsepower and torque, and increase the lifespan of their components. 

If you're wondering whether high mileage oils are suitable for your vehicle or not, keep reading to discover the seven benefits of using high mileage oils in your car.

1.   Engine Protection

High mileage engine oil lubricates more efficiently to prevent sludge and deposits from forming, which can clog your engine. High mileage oil also contains special anti-wear additives that protect expensive moving parts in your machine. 

These oils can often last up to twice as long as synthetic oils or mineral engine oils. This can save you significant money over time—especially if you own an older car with a high-mileage engine rapidly going through synthetic oil.

2.   Engine Efficiency

Performance oils may reduce wear and tear on your engine by controlling oil consumption, providing anti-wear protection, lubricating engine parts to ensure they move freely, and reducing friction in moving parts. 

They also help excellent engines more effectively during periods of intense use. In addition, they can reduce emissions and improve fuel economy. If you're still using mineral oil in your vehicle, you're missing out on all these benefits—which can add up to a lower cost per mile traveled over time.

3.   Reduced Wear and Tear

Not only can a high mileage motor oil prevent excess engine wear, but it can also help your engine run smoothly. If you're worried about regular motor oil changes leading to excess engine wear, changing your motor oil regularly might be better for your car than not.

High mileage oils are designed to extend long-term vehicle life and reduce excessive wear on internal components, ultimately keeping your car running more smoothly. 

With minor wear comes less friction, fewer leaks, less synthetic oil, and less burning oil when you're in between oil changes. You may even see an improvement in fuel economy because newer engines don't have to work hard to keep up with normal driving conditions.

4.   Longer Running Time

What exactly is a high mileage synthetic oil? The simple answer is that a high mileage oil can withstand wear and tear for long periods without breaking down. Synthetic motor oil is blended differently than mineral oil, so it can take more wear before needing to be changed. 

Many synthetic motor oils require more miles to break down than other mineral oils. For example, an ordinary passenger car could go up to 15,000 miles without needing an oil change; a high mileage motor oil could last up to 25,000 miles before requiring any attention.

5.   Extended Drain Intervals

Extended drain intervals are an essential benefit of using a high-mileage oil. Oils designed for high mileage vehicles are formulated with specially blended seal conditioners, which are designed to keep seals and gaskets from hardening over time and further reduce internal friction in older engines. 

Some engine manufacturers approve extended drain intervals as high as 10,000 miles (16,800 km) with these specialized oils. Since most drivers do multiple motor oil changes yearly at three thousand miles (4800 km) intervals or less, extending your drain interval by 3000 miles (4800 km) could mean an extra oil change saved annually! 

That's worth more than a few cents off per gallon when you get your next refill.

6.   Better Fuel Economy

Most high mileage vehicles call for 5W-20 oil in cold weather and 10W-30 in warmer climates. You can increase your fuel economy by running a thinner oil such as 0W-20 or straight 0W. The thinner oil will make your engine more efficient, and because you're using less oil per mile, you'll also use less gas. (A word of caution: Using too thin an oil will damage engines that aren't designed to use it.). 

If your automobile is over three years old, run it on high mileage motor oil from Valvoline, Mobil 1, or General Motors. These high mileage oil brands offer a range of oils guaranteed to last beyond 30,000 miles—and often over 75,000 miles or more.

7.   Recommended for Diesel Engines

Vehicles that have a diesel motor should use a 5W-40 heavy grade engine oil. The usage of this type of heavy-grade oil will prolongate the life of the diesel engine and will also protect it from leaks. 

Leak protection is critical in diesel engines that carry particulate filters and oxidation catalysts. 

Aside from the leak protection, the 5W-40 oil is known to improve the function of the engine in diesel vehicles. This heavy oil can enhance the functionality of diesel engines with after-treatment systems and EGR (exhaust gas recirculation). 

All 5W-40 oils are recommended for diesel motors that come with high mileage. 

When Should You Use High Mileage Motor Oils? 

The primary purpose of the high mileage oil is to reduce any external and internal leaks. This happens due to high-mileage oils' additives, enhancers, and conditioners. If you change to high mileage oil, the leaking oil may stop after one or two oil changes. 

The leakage stops because the high mileage oil contains conditioners and other additives that cause gaskets and o-rings to expand. Once they grow, the oil consumption will be lower. A lot of high-mileage oils contain detergents that intend to eliminate the sludge. 

That said, you should use high mileage oil if you have a car with more than 75,000 miles. Still, the high mileage oil is not a fix for any problem your high mileage vehicle might experience. 

You need to take the car to a mechanic if you notice some weird rattling noise, sudden loss of power, cylinder slap, etc. These signs indicate problems with your engine parts that the high mileage oil will not fix. 

Another scenario where it is a good idea to use high mileage oil is if you own a vehicle that is well preserved and you want to reduce engine wear. Just don't expect a high mileage oil to be a magical solution to all your mechanical failures. 

All in all, you must ask yourself, is my engine running smoothly? Because if the answer is no, you need to switch to full synthetic motor oil and help your older vehicle reduce leaks and rejuvenate seals. 

How Often Should I Change The High Mileage Oil? 

This question has many different answers. On one side, as the mileage in the engine increases, the vehicle will need a constant oil change. On the flip side, you can have fewer oil changes in cars with break-in wear. 

In the end, if your engine has been well maintained through the years, it can support fewer oil changes. To make this easier for you, follow these three pieces of advice when in doubt about how often to do an oil change: 

Don't extend the periods between oil changes if your engine tends to burn oil or you are used to adding oil regularly. 

If your vehicle loses pressure, you should frequently do an oil change. 

If your car has no quality filter, you should frequently do an oil change. 


Scheduled oil changes are essential; they keep your vehicle fresh. No matter the car miles, if you feel you should switch to high mileage oil, talk to your mechanic about it. 

You should ignore the need for an oil change in two cases: if you notice constant oil stains leaking from your car or if you hear the engine rattling. High mileage oils help your vehicle needs to hit another turning point! 


Will High Mileage Oil Clean My Engine? 

Besides the fact that the high mileage oil reduces the oil leaks from high mileage engines, it also cleans the sludge out of the vehicle. This happens due to the powerful detergents contained in high-mileage oils. 

When Should I Use Synthetic Motor Oil? 

A common rule is to switch to high mileage oil once the vehicle hits more than 75,000 miles. Although, some drivers like to wait until 100,000 or 200,000 miles. 

What Is The Difference Between High Mileage And Regular Oil?

High mileage oil is the best motor oil for older vehicles. These oils contain detergents, antioxidants, and many durable oil additives that keep your vehicle leak-free and fresh.