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Can I mix other oils with Amsoil?

Can other oils be mixed with AMSOIL?

Can other oils be mixed with Amsoil?

A question we get asked often, “Can other oils be mixed with AMSOIL?” Using AMSOIL synthetic motor oil in your vehicle is a smart way to maximize longevity and performance. AMSOIL leads the lubrication industry through product research and testing. But one day you might find yourself in a pinch.  Like realizing your oil level is low while stopped at a remote gas station with limited options on the shelf. Let’s be honest – it’s happened to all of us. So, can I mix AMSOIL with other oil? The short answer is: “Yes, I can. But it’s not ideal.”


Mixing other oils with Amsoil

Although it’s safe to mix AMSOIL with other oils, doing so dilutes the performance benefits of AMSOIL products. One reason not to mix AMSOIL with other oil is that AMSOIL is carefully formulated to protect their intended applications. Diluting AMSOIL products with other brands will reduce their benefits. For example, AMSOIL Signature Series is formulated with a heavy treatment of detergent additives. Helping it deliver 28% more acid-neutralizing power than Mobil 1.* Helping engines to stay cleaner, longer. Therefore, if you dilute Signature Series with another brand, you also dilute the additives  This will result in reducing performance.


While performance will suffer, it will not damage your engine to add conventional motor oil to your engine. That’s because you can safely mix synthetic and conventional oil. In fact, synthetic-blend motor oil is simply conventional and synthetic oil already mixed. But, it’s not a great idea to mix oil types, and the resulting blend will not support an extended oil change.  Even though it’s safe to top off an engine with conventional oil, we recommend changing the oil at your earliest convenience. In fact, AMSOIL does not support extended drain intervals where oils have been mixed.


Mixing other oils with Amsoil


In most cases, synthetic oil is the better engine protection and performance choice.  AMSOIL was the first company to produce synthetics.  Moreover, it sets the standard for other companies to follow.  Likewise, AMSOIL products are independently tested by third-party labs.  Lab testing ensures quality and support performance claims.  Therefore, if you want the peace-of-mind of using the best synthetics in the industry, use AMSOIL.  Windy Acres Synthetics can guide you to the specific products best for your vehicle engines, lawn equipment, and other motors.  Likewise, the same is true requiring greases, oils, and other lubricants.

Mixing other oils with Amsoil


If say, AMSOIL Signature Series 5W-30 Synthetic Motor Oil is installed in a vehicle, and the vehicle is later topped off with AMSOIL OE 5W-30 Synthetic Motor Oil, the vehicle will continue to operate just fine. Signature Series and OE Synthetic Motor Oil share a similar base chemistry, and formulations of the same viscosity can be safely mixed.
However, mixing the two product lines will reduce the lifespan and performance benefits of the Signature Series Synthetic Motor Oil. So we recommend against mixing different AMSOIL products.

Find the right AMSOIL product for your vehicle.  And ask Windy Acres Synthetics to set you up for wholesale pricing at 25% off retail with the Preferred Customer Program, including shipping perks and special offers throughout the year.  Windy Acres Synthetics sells AMSOIL nationwide.  We’re located in Clayton, WI, and attend many automotive events.  Look for our trailer at Sturgis, the Tomahawk Fall Ride and other major shows.

A Word About Windy Acres Synthetics

We’re experienced with AMSOIL products and vehicle maintenance.  Moreover, we’re passionate about motor sports.  Use our skill, knowledge and experience to your benefit.  We’ll help you find the right oils and lubricants for your vehicles.  Basically, our AMSOIL experience helps customers with preventive maintenance tools like MyAMSOILGarage and lookup guides.  We’ve helped thousands of motor enthusiasts over the years.  So, visit us at the next vehicle event you attend.

Also, explore our website and use our tools and resources.  Sign up for your Preferred Customer wholesale discount and benefits.  As an alternative, give us a call and we’ll help you over the phone.  Or, drop by for a visit.  We love to shake hands with our customers and meet them face-to-face.  In a nutshell, you are important to us.  Accordingly, we ensure you have the resources available for peak performance and maintenance.  If you enjoy your motor toys and have a passion for power sports, all the better.  Likewise, we’re enthusiasts about anything with an engine.

If you have questions about synthetic oil versus conventional, let’s chat.  We’ll answer the tough questions.  Be confident that AMSOIL is the best choice for your vehicle.  But don’t just take our word for it.  We can prove it.  How?  We’ll share customer testimonials and test results so you can make your own opinion.


*Based upon independent testing of Mobil 1 Annual Protection Full Synthetic 5W-30 and AMSOIL Signature Series 5W-30 in ASTM D2896. Oils purchased July 2020.