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10 Best Oil for Cars Over 100K Miles Reviews in 2023

If you have high mileage, then your engine is probably shabby. There may be different types of issues with constructing your engine. There may be significant issues between the engine’s components.

In summation, seals and gaskets will begin to break over time and cause oil to spill. Then there will be oil dirt in your engine, which can cause many problems. You have heard many times that Toyota and Honda last forever. That doesn’t mean they’re resistant to oil spill issues.

So you take preventive measures by using the best motor oil in your engine. You need to use a good type of motor oil that is made for high-mileage vehicles.

Top Picks of the Best Oil for Cars Over 100K Miles

The best type of oil contains preservatives that will help older engines stay greased better and will ensure that their seal is protected or not. The most important is that the oil will decrease the chances of oil dust building in the engine.

As a result, your engine‘s life will be increased and you can get extra miles for your truck or car. You will automatically see an increase in performance.

Below are the top 10 best oils for cars over 100k miles. Every oil has its strengths and you can make your decision according to your car mileage, normal driving conditions, and your budget.

#1Castrol Edge High Mileage Full Synthetic Motor OilCheck Latest Price
#2Valvoline Full Synthetic High Mileage with MaxLife TechnologyCheck Latest Price
#3Royal Purple High Performance Synthetic Motor OilCheck Latest Price
#4Mobil 1 High Mileage Full Synthetic Motor OilCheck Latest Price
#5Castrol GTX High Mileage 10W-30 Motor OilCheck Latest Price
#6Gumout Regane High Mileage Fuel System CleanerCheck Latest Price
#7Pennzoil High Mileage Synthetic Blend Motor OilCheck Latest Price
#8Shell Rotella T5 Synthetic Blend Diesel Engine OilCheck Latest Price
#9Chevron Supreme Motor Oil 10W-30Check Latest Price
#10HAVOLINE High Mileage Synthetic Motor OilCheck Latest Price

What to look for before buying oil for cars over 100k miles

Buying the right car oil can be overwhelming, but it doesn’t have to be. Find the key things you should consider when buying oil for a car over 100k miles.


The most important thing you need to think about before buying engine oil is compatibility with existing oil before adding the new synthetic oil properties. If your oil is not compatible with the previous one, you will need to drain the previous oil first.

After this, you can fill up this engine oil. But if it is conventional oil, it will harm your synthetic oil properties. So it’s important to verify your motor’s oil needs.


What kind of oil you will need for your vehicle depends on the particular application. You will need the oil for many applications like better engine performance, mileage, diesel and gasoline engines, etc. so you should consider the condition of your vehicle before purchasing the oil for your needs.


Now the next factor that you need to look at before buying engine oil is price. When you are going to purchase new engine oil then it’s much more complex. But sometimes expensive products are not always better than more affordable brands.

Must Check: 9 Best Oil For Cars With Over 200000 Miles


Additives work as a booster and your engine oil may conclude different types of additives to increase engine performance.

Some main additives are anti-foaming and antioxidants, corrosion inhibitors, anti-wear agents, detergents, dispersants, viscosity index improvers, conditioners, etc. these types of additives help your engine in boosting your performance according to your engine need.

Grade of viscosity

Before buying engine oil you need to look at the viscosity grade. This is one of the most relevant factors to select the engine oil as per your engine need. The viscosity grade depends on the motors travelling weather, operating temperature, and purposes like trucking and racing.

Top 10 Best Oil for Cars Over 100,000 Miles Reviews

Not all types of oil are the same. When buying engine oil for your car, there are several features to consider, including climate, mileage, and driving habits.

We’ve put together this list of the best oil for cars with over 100k miles reviews so you can easily find the best products and decide what to purchase. Take a look at our recommendations and see which one sounds like it might work for you.

#1. Castrol Edge High Mileage Full Synthetic Motor Oil

best oil for cars over 100k miles

If you are searching for the best engine oil for use in your vehicle then this will be the best without any doubt. This oil is a British global brand. It increases fuel efficiency by decreasing fuel consumption.

The oil features extra fluid titanium technology. This technology increases oil film strength. Therefore it helps in maximising engine performance.

This engine oil provides high mileage by increasing the engine performance for a long or short period. It also reduces the formulation of robbing deposits and dust. If you want synthetic oil for 150000 miles long run then this oil is perfect for you.

  • It reduces oil to burn, leaks, and power-robbing deposits.
  • It is boosted with extra Fluid Titanium Technology for Increasing Oil Film Strength And Reducing Film Breakdown.
  • It maximises long and short-term engine.


  • Helps to increase fuel efficiency
  • Decreases fuel consumption
  • Helps to maximise engine performance
  • Provides high mileage


  • None

#2. Valvoline Full Synthetic High Mileage with MaxLife Technology

best oil for cars over 100k miles

If you are panicking about your previous oil Engine then Valvoline full synthetic high mileage is the perfect motor oil for your car. This is one of the best oils for your car which is over 100k miles.

This motor oil is available with anti-wear additives. These anti-wear additives produce a wide as well as a durable layer of anti-wear film. So they can convert your older engine with a new one by preventing auto engine breakdown.

You might also like: Top 9 Best Oil Filters for Synthetic Oil

It comes with premium seal conditioners. So you don’t need to worry about anything related to the leaking problem. Thus this oil provides protection for your car’s engine.

  • It prevents engine breakdown in extreme conditions with 50% better wear protection as compared to the industry standard.
  • The MaxLife Technology helps extend your engine’s life by reducing wear and tear.
  • 25% extra defence against deposits.
  • Extreme temperature protection.


  • High mileage
  • Highly recommended
  • Good price 
  • Easy pour


  • None

#3. Royal Purple High Performance Synthetic Motor Oil

best oil for cars over 100k miles

Royal purple oil is formulated for your modified and high-performance car engine. It will provide you best wear protection as compared to other branded oils.

This oil has the feature that it has enhanced patented additive technology. It comes with a phosphorus/zinc anti-wear additive that helps in protecting metal-to-metal contact. In the lubricant industry, this oil acts as a superior and high-performing synthetic lubricant to other conventional lubricants.

It also protects your engine from white sludge buildings in your engine. It enhances fuel consumption efficiency and protects exhaust emissions equipment.

  • Perfect wear protection
  • Reduces oil consumption
  • Improves fuel economy
  • Compatible with all conventional and synthetic motor oils.
  • API licensed and recommended for use in gasoline engines.


  • Great price
  • Highly recommended
  • Extends engine life
  • Vehicle runs smoothly


  • Expensive

#4. Mobil 1 High Mileage Full Synthetic Motor Oil

best oil for cars over 100k miles

Mobil 1 is one of the renowned motor oils for high-mileage motors. It is mostly intended for those engines that have run over 75,000 miles. Thus your car needs to change its oil up to 10000 miles.

This motor oil also protects your engine from internal heat and it protects your engine even in low temperatures. If you want to maintain fuel economy and keep your engine clean, then this will be the best option for you.

It controls oxidation and protects the engine from breaking down the oil. This oil can be used in all types of vehicles such as SUVs, light trucks, supercharged gasoline, and turbocharged vehicles.

  • It helps in extending engine life by working to prevent harmful deposits and dust buildup.
  • It provides perfect internal engine heat protection and less temperature protection.
  • It comes in a convenient 10W-30 viscosity.
  • Keeps engines clean and running smoothly.


  • Good price
  • High recommended
  • Maintains fuel economy
  • Can extend the life of your engine


  • None

Also Check:

#5. Castrol GTX High Mileage 10W-30 Motor Oil

best oil for cars over 100k miles

Castrol provides your engine extra anti-wear protection. It is formulated with patented advanced technology. This technology ensures you have less phosphorus in your oil. It includes additional additives. These additives help in preventing engine wear by preventing catalytic converters.

This oil is available with super detergents. This detergent feature of the oil protects your engine from the building of dust and deposits.

It protects a lot of oil burn as compared to any leading conventional oil. It includes seal conditioners. These conditioners help to lessen oil leaks.

  • It helps in preventing deposits built up.
  • It has seal conditioners which help in reducing leaks.
  • Compatible with all conventional gasoline and diesel engines.


  • Advanced technology for protection
  • Improved formula for high mileage engines
  • Meets or exceeds most carmakers’ standards
  • 5-quart size for convenience


  • None

#6. Gumout Regane High Mileage Fuel System Cleaner

best oil for car over 100k

This oil is good if you are looking to reduce fuel consumption. It helps your engine from collecting sludge and dirt in it. So you need to change your oil after a particular time period and from this, you don’t need to struggle while starting.

It offers better protection to the engine. It prevents wear protection to your engine and from oxidation and from corrosion.

  •  PEA removes fuel economy and maximise performance in one fill-up.
  • It will not void manufacturer’s/OEM.
  • It fights ethanol and prevents future carbon built-up and water corrosion.
  • Conditions upper cylinder for reducing friction and wear in high mileage vehicles.


  • Easy to use
  • It fights ethanol
  • Reduces friction and wear
  • Helps to clean and preserve high mileage engines


  • People have bad experiences with this product

Also Check: Top 6 Best Scratch Removers for Black Cars

#7. Pennzoil High Mileage Synthetic Blend Motor Oil

best oil for cars over 100k miles

Natural oil is used to make Pennzoil high-mileage oil. It features gas-to-liquid PurePlus technology. So this oil has some impurities. So it helps in preventing deposits and sludge formulation.

It reduces your fuel economy and you can drive an extra 550 miles easily on average in a year. This feature makes this oil unique from others. It also helps in cleaning up your piston by up to 45%. It also helps the engine from losing power.

This comes with excellent lubricant ability. This ability of oil provides you best wear-protection and also prevents metal-to-metal. So it is easier to carry and pour.

  • It helps in preventing dirt and other damaging dust.
  • It is recommended for vehicles with over 75,000 miles.
  • It contains seal conditioning agents for cracked and dry engine seals to help from reducing leaks and consumption.


  • High mileage
  • Good price
  • Smooth running
  • Promotes fuel economy


  • None

#8. Shell Rotella T5 Synthetic Blend Diesel Engine Oil

best oil for cars over 100k miles

Shell Rotella engine oil meets the European and USA engine manufacturers’ needs. This oil has an advanced low-ash formula and controls exhaust poison clocks in engines.

This oil protects your engine from piston deposits and keeps your engine clean. It also ensures the reliability of the components.

It helps your engine in starting even in cold conditions and utilises base oil components. It provides long-term engine protection and below are its features, pros, and cons that you must read.

  • It delivers better cold cranking properties and better low-temperature pumpability than regular 15W-40.
  • As compared to the previous formulation it provides improved oxidation performance for increased resistance to oil breakdown under high temperature.
  • It has a single 1-gallon bottle with an ergonomic design for pouring and easy handling.
  • Fuel economy saves up to 2 percent compared to a conventional 15W-40, which helps you stretch your budget and improve your bottom line.


  • Good quality
  • Good price
  • It prevents wear and acts as a safeguard from oxidation as well as corrosion


  • It can be used by diesel engines only

#9. Chevron Supreme Motor Oil 10W-30

best oil for cars over 100k miles

Chevron supreme engine oil is high-quality motor oil for four-stroke gasoline engine usage. This oil comes with good quality base stocks and robust additive packages. This package has shear stability improvers, corrosion inhibitors, antioxidants, anti-wear agents, detergents, dispersants, etc.

If you are having a critical engine then you must use this oil because if you are having a critical engine then parts of your vehicle will get super anti-wear protection.

This engine oil is perfect for different types of vehicles including passenger cars, motorcycles, powerboats, light trucks, and other mobiles as well as stationary equipment.

  • This oil comes in a 5-quart container, making it easy to top off your oil levels as needed.
  • It also contains special additives that protect against deposit formation and oil thickening.
  • It helps keep PCV systems clean for smooth engine performance.


  • Great price
  • High quality 
  • Good rating


  • None

#10. HAVOLINE High Mileage Synthetic Motor Oil

best oil for car over 100k

If you want to have a deposit shield in your engine, then you must use Havoline engine oil. It helps in preventing excessive fuel consumption and also increases fuel efficiency for your high-mileage motor.

This engine performance will decrease after a certain time period. This occurs due to having compromised gaskets and collapsed seals.

It includes antioxidants and provides you with high engine performance.

  • Made with a synthetic blend of oils for better protection and performance.
  • It helps in preventing oil consumption.
  • Compatible with conventional oil filters.


  • Resistance to oxidation
  • Extra cleaning agents, which maintain cleanliness and engine performance
  •  High mileage
  • Great price


  • None

FAQs About Best Oil for Cars Over 100K Miles

Why is high mileage good for cars over 100k miles?

High mileage is good for cars over 100k miles Because the engine is being burned continuously and can burn any carbon build-up.

Should You Use High-Mileage Oil in Your Car?

If you talk about the high mileage oil of your high-mileage car, it is the most critical aspect of keeping your car’s engine healthy for a much longer lifespan.

Is it ok switching to Synthetic Oil after 100K Miles?

Yes, you can switch to synthetic oil after 100k miles.

Is High-Mileage Oil Worth It?

As compared to other mileage oil high mileage oil may be more difficult to keep your car healthier for a longer time.

Does high mileage oil make a difference?

High mileage oil is different because it contains veal enhancers and some additives that are capable of minimising external and internal engine oil leaks.


If you’re driving a car with over 100,000 miles, you know that finding the right motor oil is essential to keeping your engine running smoothly. Based on customer reviews, we’ve compiled a list of the ten best oils for cars over 100k miles, so you can decide which oil is suitable for your car. Do you have any experience with these oils? Let us know in the comments below!

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