Amsoil vs Redline Oil: Which is the Better Option?

Written by

Charles Bolte


Vernon Hoppe 

amsoil vs redline oil

Known for their quality and high-performance offerings, Redline and Amsoil are reputable automotive brands specialising in synthetic oil products.

Amsoil excels in durability, withstanding high temperatures, reducing friction, resisting oxidation, and maintaining viscosity. Meanwhile, Redline oil boasts higher film strength, withstanding extreme stress and heat.

While they may not be the cheapest options, the quality and benefits make them worth the money. Read on to know between Amsoil vs Redline oil which one should be your choice.

Redline Oil vs. Amsoil

1. About Redline Oil


Founded in 1979, Redline Oil is a well-known brand in the oil market. They are responsible for generating synthetic oils and lubricants for various uses, including motorcycles, racing, and other high-performing vehicles.

Redline oil is often used for engines and vehicles that require superior protection and lubrication. They are best for street and track use, especially in racing applications.

How good is Redline oil?

The brand provides a wide range of synthetic oils, including engine and gear oils, transmission fluids, synthetic oils and other fuel system additives.

Also, it has features that give stability, superior protection, reduced friction, improved fuel efficiency, and enhanced engine cleanliness.


  • Redline oil offers exceptional engine protection and minimizes friction, making it a favored choice among enthusiasts.
  • Its advanced additive packages enhance performance and provide superior protection, even in extreme conditions.
  • Redline oil offers extended drain intervals, reducing the frequency of oil changes and providing convenience for vehicle owners.


  • One potential downside of Redline oil is its higher price than other oils in the market.

2. About Amsoil oils


Amsoil, a reputable brand in the automotive industry, is proudly manufactured by Amsoil Inc., the company who makes Amsoil. Since its inception in 1972, Amsoil has been at the forefront of synthetic motor oil production, introducing high-quality oil products for various automotive uses.

Amsoil features and benefits

Amsoil synthetic oils are created for a wide variety of purposes, such as automotive, marine, industrial, and power sports equipment, both for diesel and gasoline engines.

So, is Amsoil worth it? The answer is yes, the brand’s oil products provide great protection against wear, friction, and extended drain intervals.


  • Amsoil offers extended drain intervals, reducing the frequency of oil changes and providing convenience and cost savings.
  • It provides excellent engine protection and lubrication, ensuring optimal performance and longevity.
  • Amsoil can improve fuel efficiency, potentially saving on fuel costs over time.
  • The brand offers a wide range of products tailored to different applications, allowing customized solutions.


  • One potential drawback of Amsoil is its limited availability in certain regions, which may make it harder for some consumers to purchase the desired products.
Viscosity Lighter and thinner viscosity, thus allowing a more smooth and efficient engine operation as well as cold start. Thicker oil, thus more efficient at average temperatures.


Fuel Economy Emphasizes fuel economy benefits Wide range of options for different needs
Stability Stays fluid despite the changes in temperatures, yet not as stable as Redline oils. More stable and reliable in summer heat, as it prevents engine oxidation.
Performance Focuses on racing and high-performance Specialized oils for extreme conditions
Cost Range (1-quart bottle) $8 to $12 $10 to $15

Redline 5w30 Vs. Amsoil 5w30: How Do the Two Differ?


To further compare Redline vs Amsoil, let’s pitch the two most popular products from each brand against each other. Regarding 5W-30 motor oil, Redline and Amsoil offer distinct features that set them apart.

Redline 5W-30 is known for its exceptional thermal stability and film strength, making it suitable for high-temperature environments and performance-driven applications.

On the other hand, Amsoil 5W-30 emphasizes extended drain intervals and fuel efficiency, making it an ideal choice for regular driving conditions.

Redline Oil Vs Amsoil Oil: Which is Better?


Deciding which brand is really better depends on your preference and specific needs since both of them provide high-quality synthetic oils.

If you focus on having a high-performing vehicle or good engagement in racing activities, Redline might be the better option for you. It is a stable and thick oil that works well in high temperatures.

On the other hand, if you’re looking for longer drain intervals and wider oil options, then Amsoil is a suitable choice. As a thin oil, it ensures a smooth ride with higher fuel economy.

Remember, it’s still best to consider a lot of factors such as type, usage, and consumer reports when deciding which brand you choose.

Factors to Consider When Choosing the Best Oil for Your Motorcycle


  1. Requirements: Always check your owner’s manual for the recommended oil regarding viscosity and specifications.
  2. Usage: Consider the type of motorcycle you do, such as regular commuting, towing, racing, or extreme conditions. Some engine oils are generated for specific applications.
  3. Synthetic vs. Conventional: Synthetic oils generally offer better performance and protection but come at a higher price. Conventional oils are more affordable but may provide a different level of performance.
  4. Additive Packages: Look for oils with advanced additive packages that offer benefits like improved protection, reduced friction, and enhanced fuel efficiency.
  5. Manufacturer Approvals: Some manufacturers and transmission fluid dealers have specific oil recommendations. Check if the engine oil you’re considering meets those specifications.

Recommended Products

For Redline:


  • Redline 5W-30: Ideal for high-performance and racing applications, providing exceptional thermal stability and film strength.
  • Redline 10W-40: Designed for engines subjected to extreme conditions, offering superior protection and lubrication.
  • Redline 20W-50: Suitable for high-performance engines and hot climates, ensuring excellent viscosity stability and wear protection.

For Amsoil:


  • Amsoil Signature Series 5W-30: Offers extended drain intervals and fuel efficiency benefits, suitable for regular driving conditions.
  • Amsoil Synthetic Metric Motorcycle Oil: Specifically formulated for motorcycles, providing excellent protection and performance in various viscosities.
  • Amsoil European Car Formula 5W-40: Engineered for European vehicles, offering exceptional wear protection and compatibility with emissions control systems.

Note that the availability of these specific products may vary based on your region. It’s recommended to visit the respective websites of Redline and Amsoil or consult with local retailers to find the recommended products that meet your requirements.

Where to Buy These Oils?

Redline and Amsoil products are readily available through their official websites. Additionally, they may have authorized dealers and distributors in various locations. Local auto parts stores, performance shops, and online retailers might also carry their products.

Common Problems With Engine Oil and Prevention

  • Running out of oil: Regularly check your oil level and top it up when necessary. Follow the manufacturer’s guidelines for oil change intervals.
  • Engine oil leak: One of the most common problems for motorcycles is engine oil leak. To avoid this, you should check for debris stuck and seal the engine securely.
  • Driving on old oil: Change your oil at the recommended intervals to ensure optimal lubrication and protection for your engine.
  • Overextending oil change intervals: While synthetic oils can provide extended drain intervals, following the manufacturer’s recommendations is essential to prevent potential engine damage.

How Often Should I Change My Oil

The ideal oil change interval depends on several factors, including the vehicle, oil type, driving conditions, and manufacturer recommendations.

Typically, it’s recommended to change the oil every 2,000 to 6,000 miles or every six months, but consult your vehicle’s owner’s manual for specific guidance.



Can you mix Amsoil and Redline oil brands?

It is indeed possible for you to mix Amsoil and Redline oil with the same viscosity. However, it’s not recommended.

Can I use Amsoil and Redline oils for both gasoline and diesel engines?

Yes, both brands offer oils suitable for both gasoline and diesel engines. Ensure that you select the appropriate viscosity and specifications for your engine type.

Is Redline oil good for Harley motorcycles?

Redline Harley are special formulations for motorcycles, including Harley-Davidson models. These oils provide excellent protection and performance for motorcycles.

Why is Redline oil so expensive?

Redline oil is more expensive due to its high-quality synthetic base stocks, advanced additive packages, and focus on racing and high-performance applications.

Is gasoline car oil the same as diesel oil?

Gasoline and diesel engine oils have different formulations to meet the specific needs of each engine type. Diesel engine has a higher viscosity and lower-temperature pumpability when compared to gas engine oil. It’s crucial to use the oil recommended for your vehicle’s engine.


When choosing the best synthetic oil, between Amsoil vs Redline oil, consider factors like vehicle type, usage, and manufacturer recommendations.

Both brands provide primary oil solutions and complete oil change kit for excellent performance and protection. Evaluate viscosity, performance benefits, accessibility, and cost to make an informed decision.

Follow manufacturer guidelines for oil change intervals and regular maintenance to keep your engine running smoothly and shockproof.

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