5 Best High Mileage Oils for 2019 – Review and Buyers Guide

Best High Mileage Oil

If your vehicle is a bit old, then it probably has an engine inside with a mileage that is over 75,000 miles.

Thankfully, the high mileage oil is here to protect, preserve, and make an engine with a high mileage run more efficiently.

The high mileage oil also contains additives that will help prevent regular wear and tear.

In addition, most top-rated high mileage oils on the market have a seal conditioner additive that will help prevent oil leaks from happening.

Oil leaks are a common problem with old engines that hopefully the high mileage oil is here to resolve.

Therefore, if you are the proud owner of a high mileage vehicle, you need to use the high mileage oil whenever you perform maintenance on your engine. It’s an absolute must!

5 Best High Mileage Oils for 2019 – Review

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Product Name

Viscosity

Rating

Current Price

Castrol 06470 20W-50 GTX High Mileage Oil

1. Castrol 06470 20W-50 GTX High Mileage Oil

20W50

4.9

Royal Purple HMX Synthetic High Mileage Oil

2. Royal Purple HMX Synthetic High Mileage Oil

5W30

4.8

AmazonBasics High Mileage Oil

3. AmazonBasics High Mileage Oil

5W30

4.7

Valvoline 10W-40 High Mileage Oil

4. Valvoline 10W-40 High Mileage Oil

10W40

4.6

Mobil 1 45000 5W-30 High Mileage Oil

5. Mobil 1 45000 5W-30 High Mileage Oil

5W30

4.4

1. Castrol 06470 GTX - Fights Sludge & Prevents Wear & Tear

Editor's Rating: 4.9 out of 5 stars (4.9 / 5)

Castrol 06470 20W-50 GTX High Mileage Oil
  • Viscosity: 20W50

This Castrol high mileage oil is a winner when it comes to protecting your engine.

Indeed, it comes with many additives that will not only prevent regular wear and tear but also prevents the accumulation of sludges and debris inside your engine.

This will make your engine run more efficiently, silently, as well as provide you with better mileage.

The only caveat we note with this high mileage oil is that the price is a little bit high considering that you get only 1 L of oil with this purchase.

However, if you have an engine that is above 75,000 miles, then the Castrol is one of the best high mileage oils that you can currently buy. We highly recommend it!

Pros:

  • Contains many additives that prevent wear and tear
  • Full thermal protection against high temperatures. Will not evaporate
  • Specially formulated so as to make an old engine run more efficiently
  • Contains a seal conditioner in order to prevent leaks from happening

Cons:

  • High SAE rating. Not ideal for cold temperatures
  • Recommended only on a few specific oil filters like Bosch filters

Notes

Due to the SAE rating of 20W50, this high mileage all is not recommended for vehicles that sit in very cold temperatures.

2. Royal Purple 11744 HMX - Excellent for Cold Temperatures

Editor's Rating: 4.8 out of 5 stars (4.8 / 5)

Royal Purple HMX Synthetic High Mileage Oil
  • Viscosity: 5W30

If you live in an environment where the temperatures get very cold and have a high mileage vehicle, then this oil will interest you.

Indeed, with its SAE rating of 5W30, this high mileage oil is clearly intended to be used in cold temperatures.

However, even if this high mileage oil has excellent viscosity in cold temperatures, it will still be able to withstand very high temperatures inside your engine block.

It contains in many zinc / phosphorous additives inside that will protect an old engine and help extend its lifespan. Additionally, the seal conditioners inside this oil will prevent future leaks from happening.

All in all, the additives of this fully synthetic oil make it a very attractive contender when compared to other oils in this high mileage oil review.

Pros:

  • Contains many additives to make your engine more efficient
  • Excellent resistance to low temperatures. Will not solidify
  • Advanced seal conditioners inside prevent oil leaks

Cons:

  • Requires more frequent oil change
  • A bit pricey

Notes

This always needs to be changed more frequently when compared to others, especially if you live in a cold environment

3. AmazonBasics AM53BH3Q - Value for Money High Mileage Synthetic Blend

AmazonBasics High Mileage Oil
  • Viscosity: 5W30

If you need a value for money high mileage oil, then this AmazonBasics oil is an excellent choice to consider. You get no less than 1 gallon of oil with this purchase so it should be enough for a full engine oil change.

Additionally, you have the possibility to choose between an SAE rating of 5W30 and 5W40 depending on your need.

One good thing about this oil is that it has been specially formulated so as to prevent wear and tear in old engines.

Let’s not forget that a high mileage engine usually suffers from greater wear and tear of the engine’s moving parts so this high mileage oil should help.

Also, it has excellent resistance against high temperatures and will not lose its viscosity regardless.

If you have a high mileage vehicle that usually runs hot and need an oil change, then this oil is one of the best high mileage synthetic oil for the money. Especially considering that you get 1 gallon of oil with this purchase which makes it value for money.

Pros:

  • You get 1 gallon of oil. Value for money
  • Flexible. Ability to choose between different viscosities
  • Contains many additives that make your old engine more efficient

Cons:

  • Intended for gasoline engines only

4. Valvoline 782482 10W-40 - Prevents Your Seals from Leaking

Editor's Rating: 4.6 out of 5 stars (4.6 / 5)

Valvoline 10W-40 High Mileage Oil
  • Viscosity: 10W40

The Valvoline is a top-rated high mileage oil that is used in many professional garages. It has been specifically formulated for old engines with high mileage.

One good thing about this high mileage all is its flexibility. Indeed, you can purchase it in a wide range of sizes depending on your need.

In addition, there is a special seal conditioner inside this oil that will prevent oil leakages from happening. Oil leakages are a common problem with high mileage engines, and hopefully, this product will help reduce any leakages from happening.

Also, it contains additives inside that will help prevent sludges and deposits from happening. This will improve your fuel economy as well as make your engine run more efficiently.

Pros:

  • Ability to purchase in different sizes depending on your need
  • Special seal conditioner inside prevents oil leakages
  • You get 1 gallon of oil. Value for money

Cons:

  • Difficult to find this oil in a different viscosity

5. Mobil 1 45000 5W-30 - Premium Grade Oil for Cold Temperatures

Editor's Rating: 4.4 out of 5 stars (4.4 / 5)

Mobil 1 45000 5W-30 High Mileage Oil
  • Viscosity: 5W30

Mobil makes some of the best motor oil for high mileage engines that you can buy. This current product is no different.

This is a synthetic motor oil that contains many cleaning and anti-wear additives inside. When used in an old engine, it will protect the moving parts inside and prevents the accumulation of sludges and debris.

This directly translates into a vehicle that runs more efficiently and consumes less fuel. Also, there is a special chemical seal conditioner inside this oil. It will penetrate in the seals of your motor and prevents it from leaking.

Also, due to the SAE rating of 5W30, this oil can be used in very cold temperatures without losing its viscosity.

If you need a high-quality grade oil for your high mileage vehicle and live in a cold region, then this oil by Mobil comes highly recommended.

Pros:

  • Premium grade oil. Resistant to high temperatures and pressures
  • Will not lose its viscosity in cold temperatures
  • Contains many additives that make the engine run more efficiently

Cons:

  • Not fully synthetic
  • The price could have been more competitive

Notes

The back label shows that this oil is not fully synthetic but rather a conventional oil labeled as synthetic

How to Buy the Best High Mileage Oil

How to Buy the Best High Mileage Oil

#1. Motor Age   

The age of the motor engine, as well as the mileage on the counter, are important factors that you need to consider.

Most people will consider a motor engine with a mileage of above 75,000 miles to be old. However, it is up to opinion as to what counts as “old.”

You may want to use a high mileage oil on a vehicle with 75,000 miles, or not. There is no exact science to it.

Whatever you choose, there is no harm done to the vehicle’s motor engine even if it does not technically count as a high mileage vehicle.

#2. Types of Oil

There are several types of high mileage motor oils on the market. Here are a few of the most common high mileage motor oils you will encounter.

Mineral oil

Simply put, mineral oil is the oil that is fully organic and extracted from the ground. It contains little additives and is usually marketed as organic or conventional oil.

This type of oil is generally a little bit more affordable when compared to other types of oils because it is cheaper to make.

However, the main disadvantage of the mineral oil is that it has a low tolerance to very high temperatures.

Semi-synthetic oil

Just like its name suggests, the semi-synthetic oil is a hybrid between a man-made oil and mineral oil.

This type of oil is one of the most popular motor oils on the market because it has the right balance between efficiency and price.

Moreover, it comes in many SAE viscosity ratings which makes it versatile and adaptable to a wide range of vehicles out there.

Synthetic oil

Synthetic oil is a fully man-made oil. It has the greatest number of additives and usually works in all types of vehicles, whether it is a new vehicle or a high mileage one.

The main disadvantage of synthetic oil is its price.

Indeed, when compared to other types of oils, it is more expensive because it is costlier to make a synthetic oil than mineral oil.

#3. Viscosity

Each vehicle manufacturer usually makes and calibrate their motors for use with a specific oil viscosity. Oil viscosity is denoted by its SAE rating.

The most common SAE rating for a high mileage oil is generally 10W40. The “W” stands for winter. The lower the value of the “W,” the better it would be able to withstand cold temperatures.

For example, a high mileage engine oil rated at 5W30 will be able to flow better and has a superior viscosity at low temperatures when compared to an engine oil with a rating of 10W40.

In addition, you should ensure that your high mileage oil is viscous enough so as to allow the moving parts inside your engine to move freely.

It should also provide adequate lubrication to the engine at the same time, so you need to take into account the temperature as well.

If you live in a very cold environment, it is always best to go with a high mileage oil that has a lower SAE rating like 5W30.

However, you should always refer to your manufacturer specs to see which type of viscosity is mostly suited to be used in your high mileage vehicle.

#4. Additives

Additives are simply chemicals that oil manufacturers add so as to make their oil more performing and almost all of the best high mileage oils on the market have additives in them.

For example, there can be an additive that prevents regular wear and tear from happening inside your motor.

Additionally, other additives will make the oil more resistant to high temperatures as well as high pressures.

Additives are usually very important in engine oil, especially if you will be using it in a high mileage vehicle.

Therefore, you must ensure that the engine oil you are interested in has additives inside that will make the engine run more efficiently.

#5. Brand        

There are several types of high mileage oil brands on the market. You may be tempted to save some money by going with a no-name high mileage oil.

However, for safety and efficiency reasons, you should always choose a branded high mileage oil.

This way, you are guaranteed to get a high-quality oil that will make your high mileage vehicle run more efficiently than before.

It also drastically reduces the risk of damage to the engine block as it is safer to use.

Conclusion

As we have seen, every owner of a high mileage vehicle needs a high mileage oil when performing maintenance on their engine.

It will not only make the engine run more efficiently, but it will also prevent regular wear and tear from happening which in turn will make the engine last even longer.

In addition, the high mileage oil does not cost more than regular engine oil. In fact, it remains relatively affordable.

Hopefully, you found a quality oil in our review above. If you have not made a selection yet, then read our high mileage oil review one more time.