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What Is High Mileage Oil? All That You Need To Know

what is high mileage oil

If you're wondering, “what is high mileage oil?” It is the type of oil made specifically for vehicles with 75,000 miles or more to help improve their performance and eliminate minor leaks.

Auto Repairs Are EXPENSIVE

Your vehicle is not designed to last forever, and there will be a point in time where you have to deal with major issues. Typically, vehicle major damages occur at high mileage, sometimes around 100,000 miles. That's why people get very concerned and look for learning more about special maintenance that targets high mileage cars.

Luckily, manufacturers and automotive experts realized that when vehicles hit a high mileage threshold, they require special care. So they came up with a variety of products that you can investigate.

One of the very common products you need to consider when your vehicle exceeds a certain high mileage is the high mileage oil. As you might already know, your engine oil is a critical fluid that lubricates the engine and prevents overheating and catastrophic damages.

Let's learn about the high mileage oil and give an idea about what benefits your vehicle will get when switching to this type of oil and how much it will cost you to purchase it.

What is high mileage oil?

As the name suggests, the high mileage oil is specific engine oil designed in a specific way to enhance the performance of vehicles exceeding 75,000 miles. In addition, this oil contains specific additives that take care of any minor leaks due to aging internal components.

That's why when switching to the high mileage oil, you don't have to worry about small cracks inside the engine. Keep in mind that's high mileage oil is great, but it's not a solution for major leaks because it cannot seal and take care of these leaks.

The other thing to keep in mind is that high mileage oil is designed with healthy additives, which means that you cannot simply switch to this type of oil if your vehicle is young here that's why we recommend that you consult with your mechanic and review your vehicles owner’s manual to get an idea about when you can switch to the high mileage oil.

What are the main benefits of high mileage oil?

Typically, the high mileage oil consists of a specific combination of chemicals that restore the internal components of your engine and delay any potential wear or tear. Thus, if an old engine is expected to have major damages sometime soon, switching to high mileage oil can delay these damages and help you enjoy extra time with your old car without needing to switch to a new vehicle.

The highway was oil additives, and chemicals ran through minor cracks and sealed them completely to protect the engine and enhance the performance. When there are no leaks or cracks in your engine, you achieve the perfect combustion process because the pressure will be at the optimum level, and your vehicle won't use too much fuel. Therefore, you'll see a significant improvement in their fuel economy.

Depending on the type of high mileage oil, you might even get additional benefits like eliminating and reducing rust and corrosion, preventing oxidation, eliminating degradation, etc. Furthermore, certain high mileage oils can get rid of sludge buildup, carbon damages, and greases in the engine, enhancing the engine's performance and extending the Indian lifetime.

Do I need high mileage oil?

As we indicated earlier, the high mileage oil is made specifically for high mileage vehicles. In other words, you cannot switch to this type of oil if it will help your vehicle's performance because it can be the other way around.

Some people get confused between older vehicles and high-mileage cars. When we use the term high mileage car, it doesn't necessarily mean that the engine is very old. This is because many newer vehicles can put very high mileage quickly because of driving on the highways and other road trips that owners of older vehicles did not use to do. Therefore, you must differentiate between high-mileage cars and older vehicles.

Many older cars are not compatible with the high mileage oil. In other words, even if you don't have a lot of mileage on your older car and you decided to switch to high mileage oil, you can't harm and completely damaged the engine. This is because the high mileage oil, as we indicated earlier, has healthy additives that could damage the weak internal seals in your old vehicle engine. So you pick up those, let's take a closer look at when you need to switch to high mileage oil:

  • Your vehicle has a lot of mileage and is typically above 75,000 miles
  • You found some signs of grease or sludge buildup on the engine
  • The engine makes weird loud noises like rattling because of low oil quality, and by switching to the high mileage oil, you might get benefits of different densities.
  • Clear streaks on the lower portion of your engine compartment

While the mentioned situations are optimal for switching to high mileage oil, sometimes your mechanic might advise you to switch to synthetic oil instead to get additional benefits. Therefore, leave it to experts and consult with your mechanic while reviewing your vehicle's owner's manual to get a better idea.

What are the best 2021 high mileage oils in the market?

It might sound that all high mileage oils are the same. However, that's not the case. Every automaker and every company design the high mileage oil in a certain way that provides specific benefits and enhances the engine performance and sealing the minor leaks.

If you search now for the best high mileage oils in the markets, you'll find an overwhelming list of products to choose from. While this is great, it can be a little overwhelming to inexperienced drivers.

Therefore, our team conducted an in-depth review of all available high mileage oils and some additives that you can combine with your existing conventional oil to enhance. We reviewed the main pros and cons and highlighted the top and most recommended high miles oils in the market as of 2021:

  1. Sea Foam High Mileage Motor Treatment

The first product mentioned here is not a high mileage motor oil. It's more of an additive that you can add to your existing oil to get extra benefits. You can purchase this additive for only $10 from Amazon, and it provides you with extra benefits to reduce oil consumption and enhance your engine's lifetime.

  1. Castrol Edge High Mileage Synthetic Motor Oil

The second product is not only a high balance oil, but also, it's a synthetic oil. In other words, this super powerful oil provides old benefits that your vehicle can get from the synthetic oil and the high mileage oil. Therefore I, expect to maximize your engine's performance long term and short term. Furthermore, by choosing this type of high mileage oil, you can achieve fewer leaks and less oil consumption.

The product is available on Amazon for $23.00 only.

  1. Lucas High Mileage Oil Stabilizer

If you're looking for high mileage additive to enhance the engine and eliminate loud noises in older cars, experts recommend switching to this product. It is available now on Amazon for only $13, and sometimes you might find it with a 13% discount.

  1. Valvoline High Mileage with maxlife Technology Synthetic Blend Motor Oil

This high mileage oil provides your car with extra chemicals that help protect the engine and eliminate any sludge buildups. It also does not require frequent changes, which means that you can wait a long time without needing an oil change urgently.

The products are available on Amazon for only $17.00, and in some seasons, you might find a 38% discount.

  1. Pennzoil High Mileage Motor Oil

If you're looking for a non-synthetic oil option that works for your high mileage car, you might need to switch to this type of motor oil. It provides your vehicle with great benefits at affordable prices. You can purchase it only for $19 on Amazon.

  1. Slick 50 Recharged High Mileage Treatment

Another great service to revitalize your seals and enhance the engine's performance without needing to consume too much oil is this product! You can find it on Amazon for only $15, and there is a 21% discount as of the time writing this article.

  1. Gumout Fuel System Cleaner

If your engine has corrosion problems and carbon buildup, you might want to consider this fuel system cleaner. It goes through the cylinders and removes any wear and tear that the new cylinder experience because of extra friction. You can purchase it for $27 on Amazon, and there is an 11% discount as well.

  1. Royal Purple High Mileage Synthetic

The royal purple is another great high mileage synthetic oil for people looking for higher-quality engine oil that protects their high mileage vehicles. You don't have to worry about loss of power or any engine deposits by switching to this type of oil. More specifically, experts indicated that the oil contains special chemicals that protect the engine from premature wear.

The product is available on Amazon for $57. It's slightly more expensive than the mentioned products in this list because it's a combination of both synthetic and high mileage oils at the same time.

  1. Techron Fuel Cleaner

This product is a great fuel cleaner that is compatible with almost a long list of ethanol blends. The company that made this product claims that you can enhance fuel economy by switching and using this fuel cleaner.

If you're interested in purchasing this product, you can also find it on Amazon for only $46.

  1. Mobil Super High Mileage Oil

Finally, this high mileage oil comes with a six-pack, and it eliminates any sludge and enhances the performance of your engine while reducing fuel consumption.


There's no doubt that your engine oil is a critical fluid in your vehicle, and it must be maintained at an optimum level and changed frequently. However, at some point in time, your vehicle might require extra care at some mileage threshold, and maintaining the proper oil level and frequent changes might not be the only option. Therefore, it might be time now to switch to a high mileage oil.

If you are wondering, “what is a high Mileage oil?” It's a specific type of oil that targets vehicles with 75,000 miles or more to enhance the engine's performance and eliminate any leaks due to minor cracks. High mileage oil is a great option for vehicles with a lot of mileage, but it does not necessarily mean that it's perfect for older cars.

Therefore, before you switch to a high mileage oil, you must consult your mechanic and review the vehicle's owner’s manual to avoid dealing with major mistakes that could cost you thousands of dollars down the road.

Sometimes investing in a high mileage oil might not be the best option for you, especially if your car has major mechanical problems in the engine or the transmission. Therefore, you must evaluate the situation carefully and compare repair costs to your vehicle's value to ensure that it's worth the investment. Otherwise, you might want to sell this vehicle and use its money to buy a better car.

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