Mobil 1 High Mileage Vs Extended Performance

Does high mileage oil make a difference? Yes, the quality of oils that you use makes a whole lot of difference. When there is an argument of quality, performance, and preference between two major products, it becomes difficult to draw a line.

Mobil 1 High Mileage Vs extended performance: are there any differences between these products? Or are the claims just another marketing strategy to sell one over the other?

Mobil 1 High Mileage and extended performance are products from the same brand; Mobil 1. They are both fully synthetic oils.

The type of engine oil that you use affects the performance of your engine. The growing need for high mileage oils is to match the specifications of high mileage engines. 

Let’s take a deep dive with a detailed comparison between Mobil 1 Extended Performance and Mobil 1 High Mileage to explore their differences.

Mobil 1 High Mileage Vs Extended Performance (side by side compression table)

Mobil 1 High MileageExtended Performance
Mileage Protection10,000 miles20,000 miles
CostCheaperSlightly Higher
FormulationFully SyntheticFully synthetic
Viscosity Grades0W-20, 5W-20, 5W-30, 10W-30, 10W-400W-20, 5W-20, 5W-30
UsageNot for 2-cycle or aviation engines except with authorized approval from the manufacturerFor all types of modern gasoline engines, but not recommended for 2-cycle or aviation engines.

Mobil 1 High Mileage – (Short Overview)

Mobil 1 High Mileage is a higher base oil viscosity option. It helps reduce leaks and offers optimum protection against high temperatures, specially packaged for high mileage vehicles. It is a proprietary blend of highly-performing synthetic base stocks. 

With the bid to achieve high performance, this product comes with a precisely balanced additive. Providing overall engine protection, the Mobil 1 high mileage protects the car’s internal components for as long as 10,000 miles, in between changes. The Mobil 1 high mileage runs in different variations, matching different specifications. 

However, the primary purpose of Mobil 1 high mileage is to provide exceptional engine protection, increase your engine life, wear protection, improved durability, and sludge cleaning. This includes support of active cleaning agents, thermal and oxidation stability, performance additives in the right proportion, with a high-performing synthetic formula.

Extended Performance – (Short Overview)

Just like Mobil 1 High mileage, extended performance is a great choice for engines and vehicles with the need to exceed 75,000 miles. It provides engine parts protection for up to 20,000 miles. As a recommended choice by ExxonMobil, it handles high-performing, turbo, and supercharged, multi-valve engines. This ranges from cars, trucks, SUVs, or vans.

The Extended performance High mileage oil acts as a superior product, outperforming most conventional and synthetic oils. It provides advanced protection to keep an engine running for longer intervals.

The benefits of the extended performance spread across cleaning up sludge, maintaining engine seal performance, leak prevention, sustaining cold-weather starts, and the ability to outperform low-temperature tendencies. 

Its cold weather protection starts from as low as -40°c. With the extended performance, you don’t need to worry about the performance of your engine over long oil change intervals.

difference between mobil 1 high mileage and extended performance

There are certain factors that differentiate Mobil 1 high mileage from extended performance. These key differences feature the distinct features that make one better than the other.

1. Mileage Protection

The coverage limit for both oils is different. Extended Performance protects the engine for up to 20,000 miles. On the other hand, Mobil 1 high mileage protects the engine for up to 10,000 miles. 

There is an extensive and extended level of coverage in extended performance that is not achieved with Mobil 1 high mileage. This includes the benefits of extended life on your engine. With long-range coverage, there is a reduction in the costs of maintenance. 

The ability to achieve 20,000-mile protection is one of the major selling points of extended performance.

Winner: Extended Performance

2. Cleaning Ability

It is inarguable that Mobil 1 high mileage and extended performance have similar properties, but the cleaning ability of extended performance is different. 

There is an inclusion of cleaning agents in both products, but the efficiency differs. Mobil 1 extended performance offers an increased cleaning level with deep performance. 

This is visible with the inclusion of base oil technology and advanced additives.

Winner: Extended Performance

3. Temperature Protection

Compared to Mobil 1 high mileage and other high mileage products, Mobile 1 extended performance offers a peculiar level of protection even at low temperatures, Dropping below -40°c. With the extended performance, your engine is ready to start and perform at optimal levels even in low temperatures. This level of performance is not achievable with Mobil 1 High mileage. 

The secret with extended performance functions in low temperature is because of its faster lubrication. The fluidity and ability to flow through essential parts of the engine give it an advantage over Mobile 1 high mileage. This impacts the durability of the engine.

Winner: Mobile 1 high mileage

4. Leaks

Mobil 1 high mileage has a higher chance of preventing oil leaks than extended performance. Although extended performance handles the process of cleaning sludge perfectly, Mobil 1 high mileage is a better choice for older engines. This is because it takes care of leaks and seals. 

With the inclusion of a proprietary blend of highly-performing synthetic base stocks, Mobil 1 oversees wear on the engine. The introduction of seal conditioners in Mobil 1 high mileage provides long-lasting leak protection.

Winner: Mobile 1 high mileage

High Mileage Vs Extended Performance (3 key similarities)

1. High Mileage Oil

The introduction of high mileage oils was to match the increasing needs of vehicles covering high miles. Both the motor oil handle vehicles covering more than 75,000 miles. Both products include the use of conditioners, detergents, additives, and antioxidants. 

They maintain a similarly high mileage oil formula, with certain peculiarities in operation. Both oils address the specific needs in high mileage vehicles.

2. Full synthetic

These products feature an advanced full synthetic formula. This impacts the overall protection of the engine. The benefits include an amazing resistance to oil breakdown, ensuring long-lasting protection. 

Although the flashpoint, viscosity, pour point differ across all products and grades. Most high mileage oils are synthetic oils. Hence, the problem lies in the nature and blend. 

Some are fully synthetic, while others are a blend of conventional and synthetic. Both are fully synthetic, offering benefits of wear protection and temperature protection in extreme weather.

3. Basic Features

These products share similar basic features. These include a fully synthetic advanced formula, performance additives, thermal and oxidation stability, and cleaning agents.

Extended performance and Mobil 1 share the same advantages and benefits. However, these are not in the same proportion as one might perform better than the other in certain scenarios.

The inclusion of similar basic features make them achieve a 10,000 – 20,000 mile protection wear protection, engine protection, and sludge cleaning.

Mobil 1 High Mileage and Mobil 1 Extended Performance: which one to chose?

This boils down to a simple question, why do you need a high mileage? Your need to purchase a high mileage oil should guide your choices. If you need a high mileage oil with extended performance and long-lasting protection, the Mobil 1 extended performance is the best choice. 

Similarly, if you need a high mileage oil for your old engines, you can go for the Mobil 1 high mileage, because of its ability to handle leaks. On a general scale, extended performance is a better choice for engines. 

People also ask

Does high mileage oil make a difference?

High Mileage oil makes a lot of difference in the performance of an engine. From protection against wear, improved mileage, cleaning sludge, maintaining and reducing leaks, there are a lot that high mileage oil can help you achieve. High mileage is the solution for vehicles that handle more than 75,000 miles. 

More importantly, it helps prolong the life of your engine.

Should Mobil 1 use high mileage?

The introduction of Mobil 1 high mileage was to provide a solution for high mileage vehicles. You can use Mobil 1 high mileage for your vehicles. This is as long as the engines have a mile need of above 75,000 miles. 

With the inclusion of seal conditioner, anti-wear additives, and detergents, you are assured of attaining thorough clean up and break down of sludges in your engine.

Is High Mileage Synthetic better?

High mileage synthetic oil is better than regular high mileage oils. It incorporates the benefits of synthetic oil with high mileage oil. The additives in high mileage synthetic oil are designed to improve and maintain the seals, prevent leaks, lubricate and maintain the state of the engine.

If your vehicle requires high performance, high mileage, high mileage synthetic oil is better.

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closing thoughts

We believe this article has given you a broad analysis of Mobil 1 high mileage vs extended performance. Now, the choice is yours. Both products will achieve exceptional performances depending on their usage. 

You might also consider choosing any of them that fits your budget.


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Mahir Ahmed


I'm the guy responsible for ensuring honest, informative, accurate and helpful guide to the reader.

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