Schaeffer oil vs Amsoil: Find The Best Match For Your Vehicle

Schaeffer oil



Did your motor oil fail to upgrade your engine performance? Or

Did you find lower engine protection and hear unusual noise? 

Completely dispiriting!  

So it’s time to look for a powerful yet budget-friendly oil. And that time, you discover a battle between Schaeffer oil vs Amsoil among motor oil users. 

Is there any solution to this battle? 

Of course, here lies. When Schaeffer oil is designed for diesel engines, the Amsoil is for gasoline engines. 

To know a head-to-head comparison between them, keep scrolling. 

Comparison Table Between Schaeffer vs. Amsoil

Everybody is super busy in this fast-paced world. Hope, you are also. We value your time. This comparison table is tailored to let you know the basic information about the oils with just a few words. 

Features SchaefferAmsoil
Types Full SyntheticSynthetic
Used for Diesel engine Gasoline engine 
Viscosity grade5W-20, 10W-30, 5W-40, 15W-405W-20,5W-30,10W-30,15W-40
Heat ResistanceCapable to operate lower temperature Relatively higher temperature resistance 
Additional additives Molybdenum Zinc and phosphorus 
Protection Highest levelBetter but not highest 
Cleaning CapabilityExcellent Average 
Oil changing interval (Milage)45000 miles 25000 miles
Compatible vehicles Mostly 4-cycle engines, ATVs, bikes   Mostly 2 Cycle engines, Cars, SUVs, Trucks, Motorcycles, Mowers, and  Boats, 

Schaeffer Overview 

Schaeffer has vast popularity as a 100% fully synthetic oil due to its quality against price, fast flowing against critical engine parts and efficiency against harsh weather conditions.

Today’s engines struggle with higher stress and pressure for higher temperatures and harsh driving on mud, rocks, and bumpy roads. But, once you drain the Schaeffer oil into your engine stomach, be stress-free and let it handle all of the stress.

Basically, the molybdenum of the oil will work as a friction-fighting agent. So the engine’s metallic components won’t come in engagement. As a result, they will be free from immature wear and tear that lowers your engine optimization and durability. 


  • Offer high mileage efficiency with high protection 
  • Excellent deposit-dispersing and soot-busting increase film strength
  • Prevent deposits and sludge formation to remain the oil clean 
  • Prolong the engine life with peak performance

Amsoil Overview 

Amsoil is also a superior engine oil to ensure maximum durability for a gasoline engine considering its technological ground. This oil has more film strength and oxidation stability than other refund motor oils. 

It has zinc and phosphorus as additional detergents. That will work as a protective shield to keep your engine’s mechanical parts wear-free from frictional damage. 

Now, look at its viscosity grade. It comes with different viscosity grades and helps you use the oil under cold or high temperatures. So that you won’t think about your local weather conditions when choosing this oil for your expensive cars, heavy-duty trucks, or favorite bikes. 


  • Excellent heat resistance to use under various temperatures 
  • Ensure maximum performance and protection
  • Keep your engine healthy for a longer time
  • Higher oil changing interval increase fuel economy 

A Detail Comparison of Schaeffer Vs Amsoil 

Though you get your required information from the above discussion, still demand in-depth information about the oils. This time we focus on that instead of just core information. 

Authority Standards


Today, you just think about starting a motor oil business. And tomorrow you start. 

Can you really produce the quality oils that the engine requires? 

There’s a big ‘No.’ 

Here several authorities (American Petroleum Institution API, Society of Automotive Engineers SAE, and the European Automobile Manufacturers’ Association ACEA) work and they have set some rules and regulations for quality motor oil standards. 

So, the engine oil company, that meets the standards. You can consider them as quality oil because of the authorities approvals. 


Though you don’t have any petroleum engineering knowledge, you can trust Schaeffer because it meets not only one authority standard but also several. Some standards are API CK-4, CJ-4, CI-4, and CI-4 Plus. 


In terms of meeting authority standards, Schaeffer can’t beat Amsoil. It also got approval from API CI-4+/ CI-4, CH-4, CF, CF-2, SL, SJ, ACEA A3/B3, E2, E3, E5, and E7. 

Oil Type

There are conventional, advanced, fully synthetic, or synthetic-blend engine oils. All of these are engineered to be equipped with different engines. 

But, among the 4 types of engine oil, synthetic oils are famous for their versatile applications and affordable price. 


This oil is formulated as fully synthetic to offer maximum prevention to reduce sludge and deposit buildup. Higher deposit prevention promotes higher wear and tear protection and higher performance with heavy mileage efficiency. 


On the flip side, you find this oil a premium synthetic. Generally, if you look for maximum engine protection as well as fuel economy, that case Amsoil will be excellent to serve your purpose. 

Viscosity Grade 

Pro motor oil users already know what viscosity means. But the novices won’t. Since we value all of our readers, let’s have a little discussion on it. 

You know, engine oil comes in liquid form. But, all the oil’s liquidity isn’t the same. Some are relatively thinner, and some are thicker. Because all vehicles’ won’t require the same viscosity oil. Even the weather condition and the temperature ranges are also the cause of different viscosity. 


Schaeffer comes with 4 levels of viscosity. Such as 5W-20, 5W-40, 10W-30, and 15W-40. Where the 5W-20 is suitable for cold weather conditions, the 15W-40 is sweltering weather. So you can choose the Schaeffer oil based on your local weather conditions. 


This oil also comes with 5W-20, 5W-30,10W-30, and 15W-40. That means Amsoil also is excellent to use under various temperatures to cope with the engine’s stressful running. But, the Schaeffer oil is relatively thicker than Amsoil oil.

Compatible Engine Types 

You may be surprised to know that there are approximately 20 types of engines. But most of them are powered by gasoline or diesel. Some of the notable engine types are four-stroke engines, two-stroke engines, internal combustion engines, flat engines, etc. 

So, it’s essential to justify which engine these oils are compatible with because gasoline engine oil won’t perform as well as diesel engines. And vice versa. 


Schaeffer oil is formulated by focusing on Diesel Engine. Mostly the turbocharged, four-stroke, and intercooler engines are diesel-powered. So you can use this oil on your ATVs, motorcycles, scooters, and other 4-cycle engines. 


This oil is compatible with any gasoline-powered engine, such as light trucks, automobiles, medium to heavy-duty bikes, lawnmowers, and two-stroke engines. 

Oil Changing Interval

The flower won’t look lively and vibrant if you don’t change your vase water frequently, as water loses its minerals and other properties within this time. 

In the same way, your engine oil will be gunk with tiny particles and impurities. So it can’t work as efficiently as fresh when it becomes contaminated. That time you have to change the oil to keep your engine healthy and ensure your engine’s maximum performance and protection. 

But this oil-changing interval will depend on many things, especially oil quality and your driving skills. 


According to the manufacturer’s recommendation, it’s better to change this oil every 45,000 miles or 72000 KM or yearly 550-1000 hours of running. Because this time, the oil lost its properties, viscosity grade, and efficiency level.


Here, Amsoil backs the fight with Schaeffer as it recommends changing the oil every 25,000 miles or 40,200 km or yearly 700 hours running. The oil takes time to reduce its properties for cold weather conditions. 

However, if you install a single or dual oil by-pass kit in your engine operating system. You can longer the oil changing interval for both of the oils. 

Relative articles


Is Amsoil good for high-mileage cars?

Amsoil is suitable for new and high-mileage cars because of its top-tier protection. Since it ensures lower friction between the engine’s internal components and maximizes fuel economy, it is good to use in the summer or winter. 

Is Schaeffer’s synthetic plus full synthetic?

Schaeffer’s synthetic plus is fully synthetic and heavy-duty diesel engine oil. It ensures the engine’s components’ durability by protecting them from frictional damage. 

What To Choose Between Schaeffer Vs Amsoil 

The Schaeffer and Amsoil multi-grade oils are worth using for diesel and gasoline-powered engines. They can offer heavy-duty performance, excellent protection, and prevention under different conditions. So it can be said that both oils are the right choice for cars, Jeeps, trucks, or bikes. 

Choosing the Schaeffer oil will be an excellent decision if your vehicle is diesel-powered. While for gasoline-powered vehicles, Amsoil will be a great option.  It’s just our suggestion. You should check your manufacturer’s user guide to know its suggestions, and consider your engine type before pressing the order button. 

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