by Joshua Thomas
If you drive an older vehicle, the chances are it probably has an engine with a mileage that is over 75,000 miles. For such cars, you need the best high mileage oil to protect, preserve, and make the engine run more efficiently.
High mileage oils also contain additives that will help prevent regular wear and tear. In addition to this, most top-rated high mileage oils on the market have a seal conditioner additive that will help prevent oil leaks.
If you are the proud owner of a high mileage car, here we show you how to choose a good-quality oil for your vehicle with a review and a detailed buying guide.
1. Castrol 06470 GTX (Best Overall)
2. Royal Purple 11744 HMX
3. AmazonBasics AM53BH3Q
4. Valvoline 782482 10W-40
5. Mobil 1 45000 5W-30
This Castrol 06470 GTX high mileage oil is a winner when it comes to protecting your engine. Indeed, it comes with many additives that will prevent not only regular wear and tear, but also prevent the accumulation of sludge and debris inside your engine.
This will make your engine run more efficiently and silently, while also ensuring your gas mileage improves significantly.
The only caveat we note with this high mileage oil is that the price is a bit steep, considering that you get only 1 liter of oil with this purchase. Also, this oil is only ideal if your vehicle has a compatible filter like a Bosch filter.
However, if you have an engine that is above 75,000 miles, then the Castrol 06470 GTX is one of the best high mileage oils that you can buy. We highly recommend it!
If you live in an environment where the temperatures get very cold and have a high mileage vehicle, then this oil will interest you.
With its SAE rating of 5W30, this high mileage oil is perfect for cold temperatures. Better yet, this high mileage oil can also withstand very high temperatures and hence making it ideal for use almost all year round.
The engine oil contains zinc and phosphorous additives that will protect an old engine and help extend its lifespan. Additionally, the seal conditioners in this oil will prevent future leaks from happening.
This oil needs to be changed more frequently when compared to others, especially if you live in a cold environment. But this should not be a deal-breaker as it is easy to get.
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 the product with this purchase, so it should be enough for a full engine oil change.
Additionally, you can choose between an SAE rating of 5W30 and 5W40 depending on your needs.
One good thing about this oil is that it has a formula that prevents wear and tear in old engines. Let's not forget that a high mileage engine usually suffers from more extensive 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 want an oil change, this oil is one of the best high mileage synthetic oil for the money.
The only caveat we have with this oil is that it lacks versatility and must be used in gasoline engines only.
Valvoline is a top-rated high mileage oil that you will get many professional garages. It has a unique formula that prevents leakages for old engines with high mileage.
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.
Another good thing about this high mileage oil is its flexibility. Indeed, you can purchase it in a wide range of sizes, depending on your needs.
Also, it has several additives that will help prevent sludge and deposits from happening. And it will improve your fuel economy as well as make your engine run more efficiently.
The only problem we have with this oil is that it is next to impossible to get in any other viscosity other than 10W-40.
Mobil makes some of the best motor oil for high mileage engines that you can buy. This particular product is no different as it is a premium-grade oil which is particularly useful in cold temperatures.
This synthetic motor oil contains many cleaning and anti-wear additives. When used in an old engine, it will protect the moving parts inside and prevent the accumulation of sludge and debris.
This then translates to a vehicle that runs more efficiently and consumes less fuel. Also, there is a chemical seal conditioner inside this oil. It will penetrate the seals of your motor and prevent leakages.
Also, due to the SAE rating of 5W30, this oil can be used in freezing 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. Even if the price is a little high for our taste, and this is not fully synthetic oil, it is still a fantastic choice.
The age of the motor engine, as well as the mileage on the counter, are essential factors that you need to consider.
Most people will consider a motor engine with a mileage of above 75,000 miles to be old. The opinion on what engine we consider old varies from one motorist to the other, and from expert to expert.
You may want to use a high mileage oil on a vehicle with 75,000 miles or a little higher than this. 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.
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 is fully organic and it contains little additives. Engine oil brands will market them as organic or conventional oil.
This type of oil is generally a little more affordable when compared to other types because it is cheaper to make.
However, the major disadvantage of the mineral oil is that it has a low tolerance to very high temperatures.
Just like its name suggests, the semi-synthetic oil is a hybrid between synthetic and mineral oils.
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 is a wholly man-made oil. It has the highest number of additives and usually works in many vehicles, whether it is a new vehicle or a high mileage one.
The major 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.
Each vehicle manufacturer usually makes and calibrate their motors for use with a specific oil viscosity. The SAE rating is the most common way to denote the oil viscosity.
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 flow better and has a superior viscosity at low temperatures when compared to an engine oil with a rating of 10W40.
If you live in a 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.
Additives are simply chemicals that oil manufacturers add to enhance the performance and effectiveness of their oils. Almost all the best high mileage oils on the market have some additives in them.
For example, there can be an additive that minimize regular wear and tear. Additionally, other additives will make the oil more resistant to high temperatures, as well as high pressures.
Therefore, you must ensure that the engine oil you are interested in has additives inside that will make the engine run more efficiently.
Sea Foam High Mileage Motor Treatment HM16, 16 oz, Pack of 1, Silver - Walmart Link
Castrol 03128C Edge High Mileage 5W-30 Advanced Full Synthetic Motor Oil, 5 Quart - Walmart Link
High Mileage Oil Stabilizer - Walmart Link
Valvoline High Mileage with MaxLife Technology SAE 5W-30 Synthetic Blend Motor Oil 5 QT - Walmart Link
Pennzoil 550045217 5 quart 10W-40 High Mileage Motor Oil (SN Jug) - Walmart Link
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce - Walmart Link
Gumout 510023 Regane High Mileage Fuel System Cleaner, 6 oz. (Pack of 6) - Walmart Link
Royal Purple 11745 HMX SAE 5W-30 High Mileage Synthetic Motor Oil, 1 Quart (Pack of 6) - Walmart Link
Chevron Techron High Mileage Fuel System Cleaner, 12 oz, Pack of 6 - Walmart Link
Mobil Super (112903-6PK High Mileage 5W-20 Motor Oil - 1 Quart, (Pack of 6) - Walmart Link
Mobil 1 High Mileage (120769) 5W-30 Motor Oil - 5 Quart - Walmart Link
Amazon Basics High Mileage Motor Oil - Full Synthetic - 5W-30 - 5 Quart - Walmart Link
Pennzoil 550045205 5 quart 10W-30 High Mileage Motor Oil (SN Jug) - Walmart Link
Royal Purple 11748 HMX SAE 5W-30 High Mileage Synthetic Motor Oil - 5 Qt. - Walmart Link
Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil (1-Quart, Case of 6) - Walmart Link
Sea Foam High Mileage Motor Treatment HM16, 16 oz, Pack of 1, Silver - eBay Link
Castrol 03128C Edge High Mileage 5W-30 Advanced Full Synthetic Motor Oil, 5 Quart - eBay Link
High Mileage Oil Stabilizer - eBay Link
Valvoline High Mileage with MaxLife Technology SAE 5W-30 Synthetic Blend Motor Oil 5 QT - eBay Link
Pennzoil 550045217 5 quart 10W-40 High Mileage Motor Oil (SN Jug) - eBay Link
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce - eBay Link
Gumout 510023 Regane High Mileage Fuel System Cleaner, 6 oz. (Pack of 6) - eBay Link
Royal Purple 11745 HMX SAE 5W-30 High Mileage Synthetic Motor Oil, 1 Quart (Pack of 6) - eBay Link
Chevron Techron High Mileage Fuel System Cleaner, 12 oz, Pack of 6 - eBay Link
Mobil Super (112903-6PK High Mileage 5W-20 Motor Oil - 1 Quart, (Pack of 6) - eBay Link
Mobil 1 High Mileage (120769) 5W-30 Motor Oil - 5 Quart - eBay Link
Amazon Basics High Mileage Motor Oil - Full Synthetic - 5W-30 - 5 Quart - eBay Link
Pennzoil 550045205 5 quart 10W-30 High Mileage Motor Oil (SN Jug) - eBay Link
Royal Purple 11748 HMX SAE 5W-30 High Mileage Synthetic Motor Oil - 5 Qt. - eBay Link
Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil (1-Quart, Case of 6) - eBay Link
As we have seen, every high mileage vehicle owner needs to have the best high mileage oil to keep their engine in peak performance.
A good oil will not only make the engine run more efficiently, but it will also minimize wear and tear from happening, which in turn will make the engine last even longer.
And you can be sure there is at least one oil that will work well for your high mileage vehicle in our list above.
About Joshua Thomas
Joshua Thomas just simply loves cars and willing to work on them whenever there's chance... sometimes for free.
He started CarCareTotal back in 2017 from the advices of total strangers who witnessed his amazing skills in car repairs here and there.
His goal with this creation is to help car owners better learn how to maintain and repair their cars; as such, the site would cover alot of areas: troubleshooting, product recommendations, tips & tricks.
Joshua received Bachelor of Science in Mechanical Engineering at San Diego State University.